Education News & Blogs – NASA Jet Propulsion Laboratory

Get to know GUSTO and learn how to bring the science and engineering behind this unique balloon-based mission into the classroom.

A NASA balloon mission designed to study the interstellar medium – the space between stars – will take to the skies above Antarctica in December 2023.

Read on to learn how the GUSTO mission's unique design and science goals can serve as real-life examples of STEM concepts. Then, explore lessons and resources you can use to get students learning more.

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What the GUSTO Mission Will Do
Why Fly on a Balloon?
Location is Everything
Preparing for Liftoff
Bring GUSTO Into the Classroom

What the GUSTO Mission Will Do

Though many people think of space as empty except for things like stars, planets, moons, asteroids, meteors, and comets, it’s anything but. Typically, there is one molecule of matter in every cubic centimeter of the space between stars known as the interstellar medium. In more dense clouds of interstellar gas, there could be as many as 1,000,000 molecules per cubic centimeter. It might not seem like much compared with the 10,000,000,000,000,000,000 molecules in every cubic centimeter of air we breathe, but the interstellar medium can tell us a lot about how stars and planets form and what role gases and dust play in our galaxy and others.

Star-forming nebulas birth Sun-like stars, which turn into red giants, then planetary nebulae, then white dwarfs. Massive stars are also born from star-forming nebulas and become red supergiants, then supernova, then either black holes or neutron stars.

This diagram shows the life cycles of Sun-like and massive stars. Credit: NASA, Night Sky Network | › Learn more about star life cycles

Like plants and animals, stars have a life cycle that scientists want to better understand. Gases and dust grains that make up a dense interstellar cloud, known as a nebula, can become disturbed, and under the pull of their own gravity, begin collapsing in on themselves. Eventually stars form from the gas and planets form from the dust. As a star goes through its life, it eventually runs out of sources of energy. When this happens, the star dies, expelling gases – sometimes violently, as in a supernova – into a new gas cloud. From here, the cycle can start again. Scientists want to know more about the many factors at play in this cycle. This is where GUSTO comes in.

GUSTO – short for Galactic/Extragalactic ULDB Spectroscopic Terahertz Observatory – is a balloon-based telescope that will study the interstellar medium, the small amount of gas and dust between the stars. From its vantage point high above almost all of the Earth’s atmosphere, GUSTO will measure carbon, nitrogen, and oxygen emissions in the far-infrared portion of the electromagnetic spectrum, focusing its sights on the Milky Way galaxy and the nearby galaxy known as the Large Magellanic Cloud.

A speckled field of bluish stars is intersected by a diagonal strip of purple and brown clouds covering a glowing yellow band beyond.

Our galaxy, the Milky Way, has hundreds of billions of stars and enough gas and dust to make billions more stars. Credit: NASA | › Full image and caption

The mission is designed to provide scientists with data that will help them understand the complete lifecycle of the gas and dust that forms planets and stars. To achieve its goals, GUSTO will study:

The composition and formation of molecular clouds in these regions.
The formation, birth, and evolution of stars from molecular clouds.
The formation of gas clouds following the deaths of stars. And the re-start of this cycle.

Thick clouds of purple and pastel pink cover a speckled field of stars with clusters of large and especially bright blue and yellow stars glowing through the clouds.

Nearly 200,000 light-years from Earth, the Large Magellanic Cloud is a satellite galaxy of the Milky Way. Vast clouds of gas within it slowly collapse to form new stars. In turn, these light up the gas clouds in a riot of colors, visible in this image from the Hubble Space Telescope. Credit: NASA | › Full image and caption

Scientists hope to use the information collected by GUSTO to develop models of the Milky Way and Large Magellanic Cloud. Studying these two galaxies allows scientists to observe more details and make more accurate models. Those models can then be used for comparing and studying more distant galaxies that are harder to observe.

Why Fly on a Balloon?

Unlike most NASA missions, GUSTO won’t launch on a rocket. It will be carried to approximately 120,000 feet (36.5 kilometers) above Antarctica using what’s known as a Long Duration Balloon, or LDB.

Balloon missions provide a number of advantages to scientists conducting research. They are more affordable than missions that go to space and require less time to develop. They also offer a way to test new scientific instruments and technologies before they are used in space. For these reasons, balloons have become a popular way for university students to gain experience building and testing science instruments.

Explore how balloons are being used for Earth and space science in this video from the Johns Hopkins Applied Physics Laboratory, which is providing the mission operations for GUSTO and the balloon gondola where the mission's instruments will be mounted. | Watch on YouTube

GUSTO's use of the Long Duration Balloon provided by NASA’s Balloon Science Program offers several advantages over other types of scientific balloons. Conventional scientific balloons stay aloft for a few hours or a few days and rely on the balloon maintaining a line-of-sight to send and receive data. Long Duration Balloons use satellites for sending data and receiving commands and can stay afloat for a few weeks to a couple of months.

Made with a thin, strong, plastic film called polyethylene, LDBs are partially inflated with helium. As the balloon rises, the surrounding air pressure decreases, allowing the gas inside the balloon to expand, increasing the volume and pressure of the balloon. When fully expanded, the balloon has a volume of around 40 million cubic feet (1.1 million cubic meters). That’s big enough to fit an entire football stadium inside.

An A-frame support structure with two sets of wing-like solar panels extending from its sides floats above Earth holding a telescope at its center.

GUSTO will be attached to a balloon gondola like the one depicted in this artist's rendering. | + Expand image

The telescope itself will be attached to a platform known as a gondola, which is home to several components that make the mission possible. The multi-axis control system will keep the platform stable during flight, allowing for precisely pointing GUSTO’s 35-inch (90-centimeter) diameter telescope in the right direction. Cryocoolers and liquid helium will keep the telescope’s scientific instruments at the necessary low temperature of -452°F (4° Kelvin). And the gondola will house a radio system that allows operators on the surface to control the balloon and telescope. All these systems will be powered by lithium-ion batteries charged during flight by a set of solar arrays.

Location is Everything

GUSTO is designed to measure terahertz wavelengths (in the far-infrared portion of the electromagnetic spectrum), a range of energy that is easily absorbed by water vapor. However, the observatory's altitude will put it in the upper half of the stratosphere and above 99% of the water vapor in the atmosphere. This makes it an ideal location for the mission to make its measurements and avoid factors that might otherwise obstruct its view.

GUSTO will make its observations from the upper half of the stratosphere, which offers several benefits over observing from lower in the atmosphere or from the ground. Credit: NASA | › Explore the interactive graphic

The stratosphere offers another advantage for GUSTO. This layer of the atmosphere warms as altitude increases, making the top of the stratosphere warmer than the bottom. The colder air at the bottom and warmer air at the top prevents mixing and air turbulence, making the air very stable and providing a great place to observe space. You may have noticed this stability if you’ve seen a flat-topped anvil-shaped storm cloud. That flat top is the cloud reaching the bottom of the stratosphere, where the stable air prevents the cloud from mixing upward.

But why fly GUSTO above Antarctica? Even though balloons can be launched from all over the planet, the 24 hours of sunlight per day provided by the Antarctic summer make the south polar region an ideal launch location for a solar-powered mission like GUSTO. But more important is a weather phenomenon known as an anticyclone. This weather system is an upper-atmosphere counter-clockwise wind flow that circles the South Pole about every two weeks. The Antarctic anticyclone allows for long balloon flights of missions that can be recovered and potentially reflown.

Preparing for Liftoff

To launch a balloon mission in Antarctica, weather conditions have to be just right. The anticyclone typically forms in mid-December but can arrive a little earlier or a little later. Even with the anticyclone started, winds on the ground and in the first few hundred feet of the atmosphere need to be under six knots (seven miles per hour) for GUSTO to launch. A NASA meteorologist provides daily updates on the cyclone and the ground.

Once weather conditions are good and the balloon is launched, it will circle Antarctica about once every 14 days with the wind. The anticyclone typically lasts one to two months. Because GUSTO may be in the air for more than two months, it’s possible that the mission will continue after the anticyclone ends, causing the balloon to drift northward as winter progresses.

Bring GUSTO Into the Classroom

The GUSTO mission is a great opportunity to engage students with hands-on learning opportunities. Students can build a planetary exploration balloon and model how interstellar dust forms into planets. Explore these lessons and resources to get students excited about the STEM involved in the mission.

Resources for Educators

Resources for Students

NASA's Universe of Learning materials are based upon work supported by NASA under award number NNX16AC65A to the Space Telescope Science Institute, working in partnership with Caltech/IPAC, Center for Astrophysics | Harvard & Smithsonian, and the Jet Propulsion Laboratory.

TAGS: GUSTO, Astronomy, Astrophysics, Science, Teaching, Learning, K-12, Classroom, Teachable Moments, Universe of Learning, Balloon Mission, Missions

ABOUT THE AUTHOR

Lyle Tavernier, Educational Technology Specialist, NASA-JPL Education Office

Lyle Tavernier is an educational technology specialist at NASA's Jet Propulsion Laboratory. When he’s not busy working in the areas of distance learning and instructional technology, you might find him running with his dog, cooking or planning his next trip.

Make educational connections to NASA and JPL happenings all year long with this calendar of upcoming events and links to educational resources you can use to explore STEM with us throughout the 2023-2024 school year.

August

All Month – Go Back to School With Us

The start of the school year is a great time to explore all of the resources we have on offer for educators, parents, and K-12 students. These include everything from classroom activities to DIY student projects to video tutorials to expert talks to our Teachable Moments series, which offers education-focused explainers of the latest NASA news.

There's something for every day of the school year, and you can find it all in one place on our Back to School event page. You can also sign up to receive monthly updates about new and featured content as well as upcoming events in your inbox with the JPL Education newsletter.

Learning Resources

August 30 – See Supermoons on Parade

Skygazers will have plenty to moon over in August as the second of two supermoons this month graces the sky on August 30.

Make the event a Teachable Moment by dispelling common misconceptions about supermoons and digging into the real science behind the phenomena. Get students acting out moon phases, then have them apply what they've learned to make a Moon phases calendar and calculator. Plus, explore even more classroom activities and DIY projects all about our Moon.

Learning Resources

September

September 24 – Follow Along as Asteroid Samples Arrive on Earth

Samples collected from the surface of an asteroid parachuted down to Earth on September 24, landing about 70 miles west of Salt Lake City. The samples were collected by the OSIRIS-REx spacecraft, which gathered the material during a daring descent on asteroid Bennu in 2018. The mission, which marks the first time the U.S. has collected samples from an asteroid, will give scientists an unparalleled, up-close look at remnants from our early solar system.

Follow along with the mission by having students do some of the same math as OSIRIS-REx mission planners. Or, have them do their own asteroid-related experiments. It's also a great opportunity to make connections to another NASA sample-return mission.

Learning Resources

October

October 12 – Join NASA for the Psyche Launch

Did you know we can explore asteroids and other far away objects in the solar system to learn more about the interior of our own planet? That's one of the goals of NASA's Psyche mission, which is slated to launch on October 12 from NASA's Kennedy Space Center in Florida. The mission is designed to explore an asteroid – also named Psyche – that may be the remnant of a planet's core.

The Psyche spacecraft is one of just a handful of NASA missions throughout history that have used electric propulsion rather than a chemical engine, which means it's also a great opportunity to make connections to real-world examples of motion and forces. Get a primer on all the engineering and science behind the mission from our Teachable Moments series, then explore related lessons and projects.

Learning Resources

October 14 – Catch the Annular Solar Eclipse

October 14 marks the start of another exciting double-feature for skygazers: an annular solar eclipse followed by a total solar eclipse just six months later. In both events, the Sun, Moon, and Earth will align, creating a spectacular sight in the sky. But during the annular solar eclipse on October 14, a ring of sunlight will remain visible around the Moon. This is due to differences in the relative distances between the Sun, Moon, and Earth during the eclipse. In any case, remember to never look directly at the Sun without proper protection, such as certified solar eclipse glasses.

Another fun way to view a solar eclipse is by making a pinhole camera. Students can even use their pinhole cameras to make solar art. Check out our Teachable Moments article for more info on where and when to watch the eclipse, plus a primer on the science of solar eclipses. And explore even more eclipse lessons and activities – including a math puzzler from our NASA Pi Day Challenge.

Learning Resources

Oct. 31 – Dare Mighty Pumpkins

Every Halloween, during an annual contest held at JPL, our engineers join kids and families across the country in the hallowed tradition of pumpkin carving. But these aren't your average jack-o'-lanterns. JPL pumpkins from years past have included a simulated Moon landing, Mars-themed whack-a-mole, and an exploding pumpkin supernova. The event, which takes place during employees' lunch break, gives all-new credence to the Lab's unofficial motto, "Dare Mighty Things." And it's good timing because this Halloween is also JPL's 87th birthday.

Whether history or Halloween are your thing, we've got ways to make educational connections – including a DIY project that gets students daring mighty pumpkins, themselves.

Learning Resources

November

All Month – Explore STEM Careers

Take part in National Career Development Month in November by exploring STEM opportunities at NASA and JPL. Students can learn more about careers in STEM and hear directly from scientists and engineers working on NASA missions in our Teaching Space video series. Meanwhile, our news page has more about what it takes to be a NASA astronaut and what it's like to be a JPL intern. You can also explore a collection of stories about NASA people, Women at NASA, and Women at JPL, to learn more about the work they do.

For students already in college and pursuing STEM degrees, it's never too soon to start exploring internship opportunities for the summer. The deadline for JPL summer internships is March 29, so refresh your resume and get your application started now. Learn how to stand out with this article on how to get an internship at JPL – which also includes advice for pre-college students.

Learning Resources

December

All Month – Send Your Name to Jupiter

Here's a gift idea that doesn't cost a thing: Send a loved one's name to Jupiter with NASA's Europa Clipper mission. December is the last month to add your name to a microchip that will be flown on the spacecraft along with a poem written by the U.S. Poet Laureate, Ada Limón. The Europa Clipper mission, which is scheduled to launch in October 2024, is designed to explore Jupiter's ice-covered ocean moon Europa – the newest frontier in our search for life beyond Earth. So don't miss the boat – or, in this case, spacecraft – on this exciting opportunity.

Explore activities students can do in class or over winter break to write their own space poetry and engage in hands-on activities and experiments related to the Europa Clipper mission.

Learning Resources

All Month – Prepare for the Science Fair

Before you know it, it'll be science fair time. Avoid the stress of science fair prep by getting students organized and thinking about their projects before the winter recess. Start by watching our video series How to Do a Science Fair Project. A scientist and an engineer from JPL walk your students through all the steps they will need to create an original science fair project by observing the world around them and asking questions.

You can also explore our science fair starter pack of lessons and projects to get students generating ideas and thinking like scientists and engineers.

Learning Resources

January

January 4 - Take a Closer Look at Jupiter's 'Pizza Moon'

Everyone's favorite pizza moon is getting another series of close-ups from NASA's Juno mission. Now that Juno has completed its primary science goals, mission planners are tweaking the spacecraft's orbit to send it past some of Jupiter's most fascinating moons. Io – notable for the more than 150 active volcanoes that splotch its surface like a bubbling cheese pizza – is next on the docket with two planned flybys this school year. Keep an eye on the mission website for updates and images from the first flyby on Dec. 30, 2023 that you can use to engage students before the second flyby on Feb. 3, 2024.

While on the topic of Juno, which holds the title of the most distant solar-powered spacecraft, it's a great opportunity to segue into math lessons involving pi, exponents, and the inverse square law. Or, highlight another record-holder: Rosaly Lopes, the JPL scientist who discovered 71 active volcanoes on Io, for which she was given the 2006 Guiness World Record for her discovery of the most active volcanoes anywhere.

Learning Resources

February

February 18 – Learn What's Next for Mars Exploration

February 18 marks three years since NASA's Perseverance rover touched down on Mars, sticking the landing on one of the riskiest Red Planet descents to date. While the rover is coring away on Mars, collecting a diverse array of scientifically intriguing samples, mission teams here are busy designing, developing, and testing various devices to bring those samples to Earth. While we've collected samples from other objects in the solar system before (see October's asteroid sample return), this would be the first time we've retrieved samples from another planet. It requires an ambitious plan executed by multiple teams that need to achieve a number of other firsts – including the first launch from another planet.

Get students following along with classroom activities, projects, and challenges that have them apply their coding and collaboration skills to designing their own Mars sample return missions.

Learning Resources

March

March 7-15 – Take the NASA Pi Day Challenge

There's more than pie to look forward to on March 14 as we'll be releasing an all-new set of Pi Day Challenge math problems involving NASA missions and science. Look for the latest problem set along with links to more resources and ways to celebrate Pi Day with us starting on March 7. You can get a sneak peek with the resources below, which work all year long, even without the slice of pie – although, we wouldn't blame you if you had one anyway.

Learning Resources

April

April 8 – Watch the Total Solar Eclipse

Time to get some solar eclipse glasses and dig out your pinhole cameras once again – this time for the headliner, a total solar eclipse on April 8. The eclipse will start in the South Pacific Ocean before passing over Mexico and following a diagonal path northeast over the U.S. and Canada. NASA is holding community events across the country where you can hear from speakers and participate in activities. Learn more on the agency's web page for all things solar eclipse.

Whether you're covering eclipse topics for the first time this school year or expanding on learning from October, this solar eclipse is a good time to get students exploring more about the science of eclipses. Start by looking at the five science experiments NASA has funded for the 2024 solar eclipse, then have students investigate solar eclipse science for themselves.

Learning Resources

April 22 - Celebrate Earth Day With NASA

You may not immediately think of Earth science when you think of NASA, but it's a big part of what we do. Earth Day on April 22 is a great time to learn more about our Earth and climate science projects and missions, especially with the much anticipated NISAR mission taking to the skies in 2024 to track minute changes in the planet's surface, including those from natural hazards such as earthquakes, tsunamis, volcanoes and landslides.

Whether you want to focus on Earth’s surface and geology, climate change, extreme weather, or the water budget, we have an abundance of lessons, student projects and Teachable Moments to guide your way.

Learning Resources

May

May 6-10 – Give Thanks to Teachers and Black Holes

It may not seem like there's much to be gained from the dual programming of Black Hole Week and Teacher Appreciation Week on May 6-10, but sending students off to learn more about everyone's favorite spacely phenomenon might just give teachers the breather they deserve after a busy school year.

Have students dig into the science of black holes or even try out an experiment to learn how a black hole collision helped prove the existence of gravitational waves. Meanwhile, teachers can learn about all the ways their work has inspired us.

Learning Resources

All Month – Launch Into Summer

Speaking of black holes, don't let students' learning fall into one as the summer gets into full swing. Send them off with links to these DIY summer projects. There's even more for parents and families on our Learning Space With NASA at Home page, which also has information to help direct students' learning during out-of-school time.

Learning Resources

TAGS: Teachers, Classroom, Lessons, Educators, K-12, Parents, Students, Resources

ABOUT THE AUTHOR

Kim Orr, Web Producer, NASA-JPL Education Office

Kim Orr is a web and content producer for the Education Office at NASA's Jet Propulsion Laboratory. Her pastimes are laughing and going on Indiana Jones style adventures.

Explore how NASA's Psyche mission aims to help scientists answer questions about Earth and the formation of our solar system. Then, make connections to STEM learning in the classroom.

NASA is launching a spacecraft in October 2023 to visit the asteroid Psyche, a metal-rich asteroid. The mission with the same name, Psyche, will study the asteroid, which is located in the main asteroid belt between Mars and Jupiter, to learn more about our solar system, including the core of our own planet.

Read more to find out what we will learn from the Psyche mission. Get to know the science behind the mission and follow along in the classroom using STEM teaching and learning resources from NASA.

Jump To

Why It's Important
How It Will Work
Follow Along
Teach It
Explore More

Why It's Important

The dark rocky and metallic Psyche asteroid appears covered with large and small craters in this illustration. Some of the craters have a lighter brown material in them. The asteroid is illuminated from the upper left.

This illustration depicts the 140-mile-wide (226-kilometer-wide) asteroid Psyche, which lies in the main asteroid belt between Mars and Jupiter. Credit: NASA/JPL-Caltech/ASU | + Expand image

Asteroids are thought to be rocky remnants that were left over from the early formation of our solar system about 4.6 billion years ago. Of the more than 1.3 million known asteroids in our solar system, Psyche’s metallic composition makes it unique to study. Ground-based observations indicate that Psyche is a giant metal-rich asteroid about one-sixteenth the diameter of Earth’s Moon and shaped like a potato. Scientists believe it might be the partial nickel-iron core of a shattered planetesimal – a small world the size of a city that is the first building block of a planet. Asteroid Psyche could offer scientists a close look at the deep interiors of planets like Earth, Mercury, Venus, and Mars, which are hidden beneath layers of mantle and crust.

We can’t see or measure Earth’s core directly – it is more than 1,800 miles (3,000 kilometers) below the surface and we have only been able to drill about 7.5 miles (12 kilometers) deep with current technology. The pressure at Earth’s core measures about three million times the pressure of the atmosphere at the surface, and the temperature of Earth’s core is about 9,000 degrees Fahrenheit (5,000 degrees Celsius), so even if we could get science instruments there, the hostile conditions would make operations practically impossible. The Psyche asteroid may provide information that will allow us to better understand Earth’s core, including its composition and how it was created. The asteroid is the only known place in our solar system where scientists might be able to examine the metal from the core of a planetesimal.

The Psyche mission's science goals are to understand a previously unexplored building block of planet formation (iron cores); to explore a new type of world; and to look inside terrestrial planets, including Earth, by directly examining the interior of one of these planetary building blocks, which otherwise could not be seen. The science objectives that will help scientists meet these goals include determining if asteroid Psyche is actually leftover core material, measuring its composition, and understanding the relative age of Psyche's surface regions. The mission will also study whether small metal-rich bodies include the same light elements that are hypothesized to exist in Earth's core, determine if Psyche was formed under similar or different conditions than Earth's core, and characterize Psyche's surface features.

How It Will Work

The Psyche mission will launch on a SpaceX Falcon Heavy rocket. Psyche’s solar arrays are designed to work in low-light conditions because the spacecraft will be operating hundreds of millions of miles from the Sun. The twin plus-sign shaped arrays will deploy and latch into place about an hour after launch from Earth in a process that will take seven minutes for each wing. With the arrays fully deployed, the spacecraft will be about the size of a singles tennis court. The spacecraft’s distance from the Sun will determine the amount of power it can generate. At Earth, the arrays will be able to generate 21 kilowatts, which is enough electricity to power three average U.S. homes. While at asteroid Psyche, the arrays will produce about two kilowatts, which is a little more than what is needed to power a hair dryer.

An illustration shows the Psyche spacecraft in space with its two plus-sign shaped solar panels extended on each side.

An illustration of NASA’s Psyche spacecraft and its vast solar arrays. Credit: NASA/JPL-Caltech/ASU | + Expand image

At left, xenon plasma emits a blue glow from an electric Hall thruster. On the right is a similar non-operating thruster.

At left, xenon plasma emits a blue glow from an electric Hall thruster identical to those that will propel NASA's Psyche spacecraft to the main asteroid belt. On the right is a similar non-operating thruster. Credit: NASA/JPL-Caltech | + View image and details

The spacecraft will rely on the launch vehicle’s large chemical rocket engines to blast off the launchpad and escape Earth’s gravity, but once in space, the Psyche spacecraft will travel using solar-electric propulsion. Solar-electric propulsion uses electricity from the solar arrays to power the spacecraft’s journey to asteroid Psyche. For fuel, Psyche will carry tanks full of xenon, the same neutral gas used in car headlights and plasma TVs. The spacecraft’s four thrusters – only one of which will be on at any time – will use electromagnetic fields to accelerate and expel charged atoms, or ions, of that xenon. As those ions are expelled, they will create thrust that gently propels Psyche through space, emitting blue beams of ionized xenon. The thrust will be so gentle that it will exert about the same amount of pressure you’d feel holding three quarters in your hand, but it’s enough to accelerate Psyche through deep space. You can read more about ion propulsion in this Teachable Moment.

The spacecraft, which will travel 2.2 billion miles (3.6 billion kilometers) over nearly 6 years to reach its destination, will also use the gravity of Mars to increase its speed and to set its trajectory, or path, to intersect with asteroid Psyche’s orbit around the Sun. It will do this by entering and leaving the gravitational field of Mars, stealing just a little bit of kinetic energy from Mars’ orbital motion and adding it to its own. This slingshot move will save propellant, time, and expense by providing a trajectory change and speed boost without using any of the spacecraft’s onboard fuel.

Upon arrival at Psyche, the spacecraft will spend 26 months making observations and collecting data as it orbits the asteroid at different altitudes. Unlike many objects in the solar system that rotate like a spinning top, the asteroid Psyche rotates on its side, like a wheel. Mission planning teams had to take this unique characteristic into account in planning the spacecraft's orbits. The different orbits will provide scientists with ideal lighting for the spacecraft's cameras and they will enable the mission to observe the asteroid using different scientific instruments onboard.

The spacecraft will map and study Psyche using a multispectral imager, a gamma-ray and neutron spectrometer, a magnetometer, and a radio instrument (for gravity measurement). During its cruise to the asteroid, the spacecraft will also test a new laser communication technology called Deep Space Optical Communication, which encodes data in photons at near-infrared wavelengths instead of radio waves. Using light instead of radio allows the spacecraft to send more data back and forth at a faster rate.

Follow Along

Psyche is scheduled to launch no sooner than October 5, 2023 from Kennedy Space Center in Florida. Tune in to watch the launch on NASA TV.

Visit the mission website to follow along as data are returned and explore the latest news, images, and updates about this mysterious world.

Teach It

The Psyche mission is a great opportunity to engage students with hands-on learning opportunities. Explore these lessons and resources to get students excited about the STEM involved in the mission

Resources for Teachers

Activities for Students

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Resources for Kids

Check out these related resources for kids from NASA Space Place:

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ABOUT THE AUTHOR

Anne Tapp, Professor of Teacher Education, Saginaw Valley State University

Anne Tapp is a professor of teacher education at Saginaw Valley State University. In 2023, she served as an educator in residence with the K-12 Education team at NASA's Jet Propulsion Laboratory. Outside of writing and teaching, she enjoys serving as a volunteer for educational organizations, traveling, and gazing at the stars.

Four pre-service teachers at Cal Poly Pomona are developing their skills in lesson design and delivery as they study Earth science concepts and prepare for graduation.

Four woman face the camera, arranged two by two, in a geology classroom. Two rocks sit on a table in front of them.

Clockwise from upper left: Amie Gallardo, Sofia Vallejo, Afiya Kindle, Jacquelin Galvez-Coyt. Image courtesy: Brandon Rodriguez | + Expand image

During the fall semester of 2022, I had the privilege of working with the Education Department at California Polytechnic University in Pomona, specifically with pre-service teachers taking coursework in Earth science. During our collaboration, the curriculum had the students split time in class between learning about geology and Earth’s history and then designing and engaging in classroom activities related to the technical content that they could take to their own classes in the future. This combination had Cal Poly students learning science and education hand-in-hand each week and led to some amazing classroom lessons and lab activities.

One group of young women in the program stood out as exceptionally passionate about their future careers. This team consisted of four seniors: Jacquelin Galvez-Coyt, hoping to someday teach kindergarten; Amie Gallardo, who is planning to teach fourth grade; Afiya Kindle, who is interested in teaching elementary or middle school; and Sofia Vallejo, who is interested in kindergarten through sixth grade.

Despite their interest in working with young students and collaborating to design lessons for those students, each of these pre-service teachers allowed their individuality to shape how they navigated lesson design and implementation. I recently sat down with them to ask about their instructional style and aspirations for classrooms of their own.

Now that we’re back to in-person classes, how is the transition going?

Sofia: Returning from remote instruction felt eerie at first, but it’s so nice to return to communicate with people and build connections in a non-digital way. In-person classes prepare you to communicate with colleagues in real life, build social skills, and read body language. All of these skills are critical for a teacher in order to understand and better help students to succeed.

Amie: Returning from remote instruction has been amazing. While it had its perks, I believe, as students, we learn a lot more while working hands-on with our projects than is possible in distance learning. If we’re trying to develop and assess activities we can do with kids, that really requires being face-to-face.

A woman stands in front of a classroom. She is wearing a flannel jacket and rubber gloves while holding a rock. A person in the class faces her and has her hand up.

Amie Gallardo provides an Earth science demonstration to a class of education students at Cal Poly Pomona. Image courtesy: Brandon Rodriguez | + Expand image

What are you most excited about when it comes to having your own classroom, and how will you get your kids excited about STEM?

Afiya: I am most confident about creating a genuine safe space for kids. I’ll be able to communicate how much I care about them and about our shared future, and I think there could never be enough genuinely kind and caring teachers in this world.

Jacquelin: I think my kids will be excited about STEM because of how easy it's become to incorporate activities. There are many resources out there for teachers to use for teaching math and science that don't rely solely on a textbook. Activities that use inexpensive materials or that require a little DIY skills go a long way for students.

Afiya: Exactly! I know I developed my love for science from being hands-on and actually somewhat “in charge” of an experiment on my own. Winning a science fair competition in seventh grade for a greenhouse I built really boosted my confidence and helped reassure me of my scholastic abilities as a kid.

You led a really cool lesson with your classmates where you had them use Oreos to model tectonic boundaries. How do you feel that lesson went?

Jacqueline: I was really proud of our group. After giving a lecture to the students about tectonic plate boundaries, we dispersed Oreos to everyone. We were set up around the classroom demonstrating the activity and giving verbal instructions for everyone to follow. My favorite part was when I saw two students by me go, “Oohhhh,” and smile once they got their Oreos to demonstrate the plate boundaries correctly.

Amie: I thought it went really well! All the students in our classroom enjoyed it. Although we, as adults, may know about plate tectonics, having our hands on the Oreos to understand it made it more enjoyable.

Afiya: Plus, who doesn’t love Oreos? They’re even vegan!

Two hands wearing rubber gloves hold the top portion of an Oreo cookie. The image is animated to show the cookie top is broken in half and represents the sliding of tectonic plates

An Oreo cookie is used to demonstrate rock fault movement. Image courtesy: Brandon Rodriguez | + Expand image

Which of the NASA-JPL lessons that you’ve implemented did you enjoy, and why?

Jacqueline: My favorite JPL activity we did was the Moon Phases activity. Having one team member to the side to give the instructions allows another student to view the different Moon phases. Then you switch so both students get to see that perspective. My second favorite activity was creating layers with different colored Play-Doh and demonstrating them as different plate boundaries and folds.

Amie: The NASA lesson that I enjoyed the most was the one we did on lunar eclipses. Much like myself, many students often have an early fascination with the Moon. Learning more about the Moon and lunar eclipses made me excited about the semester.

A woman wearing a mask and glasses on the right hand side looks to the left while holding a foam ball on a stick representing the moon. A light source on the left representing the Sun shines, casting a shadow on the woman's face.

Sofia Vallejo uses a foam ball and lamp to demonstrate how solar eclipses occur. Image courtesy: Brandon Rodriguez | + Expand image

What’s next for you after you finish at Cal Poly Pomona?

Jacqueline: After I graduate at Cal Poly, I plan to attend UC Riverside to complete my credential program. While I am there, I would love to get my student teaching experience. Once I complete my credential program, I plan to apply to work at schools in the Inland Empire [in Southern California]. I want to be able to give back to the communities that influenced who I am today.

Sofia: My plans after Cal Poly are to take some time off to gain experience in the field as a substitute teacher. I also am looking to gain more volunteer experience, skills, and exposure. In the future, I want to enroll in UC Riverside to earn my teaching credential and master's degree.

Looking for ways to bring NASA STEM into your classroom or already have a great idea? The Education Office at NASA's Jet Propulsion Laboratory serves educators in the greater Los Angeles area. Contact us at education@jpl.nasa.gov.

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Moon Phases

Students learn about the phases of the moon by acting them out.

Grades 1-6

Time 30-60 minutes

When Do Lunar Eclipses Happen?

Students use a paper plate to make a model that explains why lunar eclipses don’t occur during every full moon.

Grades 4-8

Time 30-60 minutes

Modeling Crustal Folds

Students use playdough to model how Earth’s crust is bent and folded by tectonic plates over geologic time.

Grades 6-12

Time 30-60 minutes

TAGS: Teachers, School, Remote School, Classroom, Instruction, K-12, STEAM, Science, Math, resources, lessons

ABOUT THE AUTHOR

Brandon Rodriguez, Educator Professional Development Specialist, NASA-JPL Education Office

Brandon Rodriguez is the educator professional development specialist at NASA’s Jet Propulsion Laboratory. Outside of promoting STEM education, he enjoys reading philosophy, travel and speaking to your dog like it's a person.

There’s no better time to learn about the Moon than during a lunar eclipse. Here’s how eclipses work, what to expect, and how to get students engaged.

This article has been updated to include information about the visibility and timing of the total lunar eclipse on Nov. 8, 2022. See What to Expect for details.

A full moon is always a good reason to go outside and look up, but a total or partial lunar eclipse is an awe-inspiring site that gives students a great opportunity to engage in practical sky watching. Whether it’s the Moon's reddish hue during a total lunar eclipse or the "bite" taken out of the Moon during a partial lunar eclipse, there's always something exciting to observe during these celestial events.

Read on to see what to expect during the next lunar eclipse. Plus, explore resources you can use at home or in the classroom to teach students about moon phases, craters, and more!

Jump To

How It Works
Why It's Important
What to Expect
Teach It
Explore More

How It Works

Side-by-side images showing how the Moon, Sun and Earth align during an lunar eclipse versus a standard full moon

These side-by-side graphics show how the Moon, Sun, and Earth align during a lunar eclipse (left) versus a non-eclipse full moon (right). Credit: NASA Goddard Visualization Studio | + Enlarge image

Eclipses can occur when the Sun, the Moon and Earth align. Lunar eclipses can only happen during the full moon phase, when the Moon and the Sun are on opposite sides of Earth. At that point, the Moon could move into the shadow cast by Earth, resulting in a lunar eclipse. However, most of the time, the Moon’s slightly tilted orbit brings it above or below the shadow of Earth.

The time period when the Moon, Earth and the Sun are lined up and on the same plane – allowing for the Moon to pass through Earth’s shadow – is called an eclipse season. Eclipse seasons last about 34 days and occur just shy of every six months. When a full moon occurs during an eclipse season, the Moon travels through Earth’s shadow, creating a lunar eclipse.

Graphic showing the alignment of the Sun, Earth and Moon when a full moon occurs during an eclipse season versus a non-eclipse season

When a full moon occurs during an eclipse season, the Moon travels through Earth's shadow, creating a lunar eclipse. Credit: NASA/JPL-Caltech | + Enlarge image

Unlike solar eclipses, which require special glasses to view and can only be seen for a few short minutes in a very limited area, a total lunar eclipse can last over an hour and be seen by anyone on the nighttime side of Earth – as long as skies are clear!

Why It’s Important

Moon and Supermoon Lessons from NASA/JPL Edu

Lessons About the Moon

Explore our collection of standards-aligned lessons for grades 1-12.

Lunar eclipses have long played an important role in understanding Earth and its motions in space.

In ancient Greece, Aristotle noted that the shadows on the Moon during lunar eclipses were round, regardless of where an observer saw them. He realized that only if Earth were a spheroid would its shadows be round – a revelation that he and others had many centuries before the first ships sailed around the world.

Earth wobbles on its axis like a spinning top that’s about to fall over, a phenomenon called precession. Earth completes one wobble, or precession cycle, over the course of 26,000 years. Greek astronomer Hipparchus made this discovery by comparing the position of stars relative to the Sun during a lunar eclipse to those recorded hundreds of years earlier. A lunar eclipse allowed him to see the stars and know exactly where the Sun was for comparison – directly opposite the Moon. If Earth didn’t wobble, the stars would appear to be in the same place they were hundreds of years earlier. When Hipparchus saw that the stars’ positions had indeed moved, he knew that Earth must wobble on its axis!

Additionally, modern-day astronomers have used ancient eclipse records and compared them with computer simulations. These comparisons helped scientists determine the rate at which Earth’s rotation is slowing.

What to Expect

Event: Total Lunar Eclipse

Here's how and where to watch one of the sky’s most dazzling shows when the Sun, Earth, and Moon align, creating a total lunar eclipse.

The Moon passes through two distinct parts of Earth’s shadow during a lunar eclipse. The outer part of the cone-shaped shadow is called the penumbra. The penumbra is less dark than the inner part of the shadow because it’s penetrated by some sunlight. (You have probably noticed that some shadows on the ground are darker than others, depending on how much outside light enters the shadow; the same is true for the outer part of Earth’s shadow). The inner part of the shadow, known as the umbra, is much darker because Earth blocks additional sunlight from entering the umbra.

Here's what to expect during the total lunar eclipse on Nov. 8, 2022, which will be visible in North and South America, as well as Asia and Australia. Viewers in the most eastern parts of the continental U.S. will see the Moon set below the horizon as it exits Earth’s shadow in the second half of the eclipse.

At 12:02 a.m. PST (3:02 a.m. EST), the edge of the Moon will begin entering the penumbra. The Moon will dim very slightly for the next 67 minutes as it moves deeper into the penumbra. Because this part of Earth’s shadow is not fully dark, you may only notice some dim shading (if anything at all) on the Moon near the end of this part of the eclipse. Should you decide to skip this part of the eclipse, you won’t miss much.

Graphic showing the positions of the Moon, Earth and Sun during a partial lunar eclipse

During a total lunar eclipse, the Moon first enters into the penumbra, or the outer part of Earth's shadow, where the shadow is still penetrated by some sunlight. Credit: NASA | + Enlarge image

At 1:09 a.m. PST (4:09 a.m. EST), the edge of the Moon will begin entering the umbra. As the Moon moves into the darker shadow, significant darkening will be noticeable. Some say that during this part of the eclipse, the Moon looks as if it has had a bite taken out of it. That “bite” gets bigger and bigger as the Moon moves deeper into the shadow.

The Moon as seen during a partial lunar eclipse

As the Moon starts to enter into the umbra, the inner and darker part of Earth's shadow, it appears as if a bite has been taken out of the Moon. This "bite" will grow until the Moon has entered fully into the umbra. Credit: NASA | + Enlarge image

At 2:16 a.m. PST (5:16 a.m. EST), the Moon will be completely inside the umbra, marking the beginning of the total lunar eclipse, also known as totality.

Graphic showing the Moon inside the umbra

The total lunar eclipse starts once the moon is completely inside the umbra. And the moment of greatest eclipse happens with the Moon is halfway through the umbra as shown in this graphic. Credit: NASA | + Enlarge image

The moment of greatest eclipse, when the Moon is halfway through its path across the umbra, occurs at 2:59 a.m. PST (5:59 a.m. EST). As the Moon moves completely into the umbra – the part of the eclipse known as totality – something interesting happens: The Moon begins to turn reddish-orange. The reason for this phenomenon? Earth’s atmosphere. As sunlight passes through it, the small molecules that make up our atmosphere scatter blue light, which is why the sky appears blue. This leaves behind mostly red light that bends, or refracts, into Earth’s shadow. We can see the red light during an eclipse as it falls onto the Moon in Earth’s shadow. This same effect is what gives sunrises and sunsets a reddish-orange color.

The Moon as seen during a total lunar eclipse at the point of greatest eclipse

As the Moon moves completely into the umbra, it turns a reddish-orange color. Credit: NASA | + Enlarge image

A variety of factors affect the appearance of the Moon during a total lunar eclipse. Clouds, dust, ash, photochemical droplets and organic material in the atmosphere can change how much light is refracted into the umbra. The potential for variation provides a great opportunity for students to observe and classify the lunar eclipse based on its brightness. Details can be found below in the Teach It section.

At 3:41 a.m. PST (6:41 a.m. EST), the edge of the Moon will begin exiting the umbra and moving into the opposite side of the penumbra, reversing the “bite” pattern seen earlier. At this point, the Moon will have just set in the most northeastern portions of the continental United States. More and more eastern states will see the Moon set over the next hour as the eclipse progresses.

At 4:49 a.m. PST, the Moon will be completely outside of the umbra and no longer visible in the eastern United States. Those in the central United States will see the Moon begin setting around this time (6:49 a.m. CST). The Moon will continue exiting the penumbra until the eclipse officially ends at 5:56 a.m. PST, remaining visible only to viewers in the western United States, including many in the Mountain Time Zone one hour ahead.

Teach It

Ask students to observe the lunar eclipse and evaluate the Moon’s brightness using the Danjon Scale of Lunar Eclipse Brightness. The Danjon scale illustrates the range of colors and brightness the Moon can take on during a total lunar eclipse and is a tool observers can use to characterize the appearance of an eclipse. View the lesson guide here. After the eclipse, have students compare and justify their evaluations of the eclipse.

Use these standards-aligned lessons and related activities to get your students excited about the eclipse, moon phases, and Moon observations.

Educator Guides & Resources

Student Activities

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Try these related resources for students from NASA's Space Place:

Article for Kids: Lunar Eclipses and Solar Eclipses

Article for Kids: Why Does the Moon Have Craters?

Article for Kids: All About the Moon

NASA Moon Website – Find out more about the Moon and the NASA robots and humans who have visited it.

TAGS: Lunar Eclipse, Moon, Super Blue Blood Moon, Observe the Moon, Eclipse, K-12, Classroom Activities, Teaching

ABOUT THE AUTHOR

Lyle Tavernier, Educational Technology Specialist, NASA-JPL Education Office

Lyle Tavernier is an educational technology specialist at NASA's Jet Propulsion Laboratory. When he’s not busy working in the areas of distance learning and instructional technology, you might find him running with his dog, cooking or planning his next trip.

A Los Angeles math teacher gets students engaged with connections to science and exploring the human side of math, such as how leaders inspire change in their communities.

Katherine Risbrough has been teaching high school math for almost 10 years. She began her teaching career in the Hickory Hill community of Memphis, Tennessee, where she taught everything from Algebra 1 to Calculus and served as a math coach for the district. Five years ago, she came to Los Angeles to teach Integrated Math and Calculus at Synergy Quantum Academy High School.

Outside of math, Ms. Risbrough is also a superfan of college football and never misses a game at her alma mater, the University of Southern California. Her fandom for making the game is rivaled only by her love of Harry Potter, having been to every midnight book and movie release.

I caught up with Ms. Risbrough to find out how she gets students excited about math, and I learned about a new strategy she used this past year: bridging math and science by teaming up with the AP Physics teacher. Her cross-discipline curriculum focused on helping students make connections between subjects and got them engaged as they returned from more than a year of remote learning.

Math can be intimidating for students and it can be difficult to keep them engaged. How do you get your students excited about math?

A student at a desk holds open a worksheet while Ms. Risbrough leans over and points to a section of the worksheet.

Ms. Risbrough works with one of her calculus students. Image courtesy: Katherine Risbrough | + Expand image

Sometimes it's easier said than done, but math needs to be as hands-on and discussion-based as possible. We use a lot of the calc-medic curriculum, which is application and discovery first followed by a whole class discussion to share ideas and cement new learning. When students have to speak and defend a hypothesis or an argument, they are practicing mathematical reasoning, which is a skill they can take into all STEM coursework. I avoid lectures as much as possible. We also do a lot of flipped classroom learning (videos at home and practice in class), group work, use technology, and do activities that get students moving around the classroom.

I believe that learning mathematics should be a collaborative, exploratory process and that every student already has the skills necessary to become a successful mathematician. It’s my job to give them opportunities to show off and strengthen those skills, so that they can be just as successful with or without me present to help them.

This year you’ve introduced some interesting projects to make your class more interdisciplinary. Tell me a bit more about that.

I’ve really focused on keeping the math contextualized by being sure the content is interdisciplinary. For example, over half of my AP Calculus students are also taking AP Physics. This year, in particular, I was sure to coordinate with the physics teacher to see how we could align our curriculum in kinematics with what we were doing with integrals and derivatives. This began with students doing JPL’s additive velocity lesson in their physics class to set the stage for how calculus ties together acceleration, velocity, and displacement.

Both classes are so challenging for students, but when they see how strategies in one class can help lift them in another, it’s almost as if they are getting to see two different strategies to solve the same problem. Designing challenges that could be solved with both physics and math gave the students an ability to approach problems from either side. At first, they were pretty intimidated to see their two most challenging classes teaming up, but the end result was some incredible student projects and dramatic improvement in their ability to graph out relationships.

I also kick off new units by making connections to students' own life or even their future careers. They need to know the “why” beyond just, “because you’ll be tested on it.” We try to talk about STEM historical figures and current leaders (specifically mathematicians and scientists of color) as often as possible. For example, I use clips from the movies "October Sky" and "Hidden Figures" to set the stage and then lead into projects about rocket trajectories and elliptical orbits.

Pieces of paper with math terms such as 'graph' and 'function' printed on them are taped to a desk. Lines and arrows drawn with marker connect that various pieces of paper and notes are written off to the side.

Students in Ms. Risbrough's class map out language and processes to better understand shapes and limits in functions. Image courtesy: Katherine Risbrough | + Expand image

This year, in calculus, we started the year with the idea of “Agents of Change” and looked at thought leaders such as veteran astronaut Ellen Ochoa and climate scientist Nicole Hernandez Hammer and how their work relates to “instant rates of change” and “average rates of change” in calculus. Then, I had students think about moments of change in their life, and how that instant can be carried forward to a make a long term change in their careers and communities.

Coming back from COVID-19 and more than a year of remote instruction, how are your students adjusting to being back in the classroom?

Our students missed out on so many social and academic opportunities because of COVID, but they aren’t letting that stop them. The biggest struggle was starting off the school year and getting back into routines. Because of the demographics of our students, there have been more absences than usual, as many of our students help support their family at home. Many parents struggled to keep work through the pandemic, and a lot of my students work outside of school or take care of their siblings. The effects of caring for their families while still trying to focus on applying to college has really taken a toll on students.

I’m fortunate that so many kids are comfortable and open sharing feelings of increased anxiety, responsibility, or worry over the past two years. I believe it's important that my classroom and our group first and foremost be an escape from that space rather than an added stress. Their success in math – even a rigorous AP math class with a breakneck pace – comes from me being there for them as a person first and a teacher second. We focus so much on “catching them up” that we forget to take some time for them to process all they have had to manage.

A group of five students with long dark hair stand next to each other and Ms. Risbrough looking at a whiteboard with graphs drawn on it.

AP Calculus students graph out kinematics as examples of integrals and derivatives. Image courtesy: Katherine Risbrough | + Expand image

As we move toward graduation, what is one story of success that you will take away from this year?

Honestly, it's the success of my students. They have jumped into AP Calculus after 1.5 years of distance learning and the social-emotional learning burdens of Covid, and have done amazing work. They are thoughtful, persistent, and often learning multiple grades worth of skills within one calculus lesson. I guess I'm a small piece of that, but all that I've really done is give them space to explore, discuss, and learn. It's what they've done with that space that has been the best thing to watch!

Looking for ways to bring NASA STEM into your classroom or already have a great idea? The Education Office at NASA's Jet Propulsion Laboratory serves educators in the greater Los Angeles area. Contact us at education@jpl.nasa.gov.

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TAGS: Teachers, School, Classroom, Instruction, K-12, High School, Math, Calculus, Physics, Algebra, Lessons, Resources

ABOUT THE AUTHOR

Brandon Rodriguez, Educator Professional Development Specialist, NASA-JPL Education Office

Brandon Rodriguez is the educator professional development specialist at NASA’s Jet Propulsion Laboratory. Outside of promoting STEM education, he enjoys reading philosophy, travel and speaking to your dog like it's a person.

Find out how scientists captured the first image of Sagittarius A*, why it's important, and how to turn it into a learning opportunity for students.

Our home galaxy, the Milky Way, has a supermassive black hole at its center, but we’ve never actually seen it – until now. The Event Horizon Telescope, funded by the National Science Foundation, has released the first image of our galactic black hole, Sagittarius A* (pronounced “Sagittarius A-star” and abbreviated Sgr A*).

Read on to find out how the image was acquired and learn more about black holes and Sagittarius A*. Then, explore resources to engage learners in the exciting topic of black holes.

Jump To

How Black Holes Work
Why They're Important
How Scientists Imaged Sagittarius A*
Teach It

How Black Holes Work

A black hole is a location in space with a gravitational pull so strong that nothing, not even light, can escape it. A black hole’s outer edge, called its event horizon, defines the spherical boundary where the velocity needed to escape exceeds the speed of light. Matter and radiation fall in, but they can’t get out. Because not even light can escape, a black hole is literally black. Contrary to their name’s implication, black holes are not empty. In fact, a black hole contains a great amount of matter packed into a relatively small space. Black holes come in various sizes and can exist throughout space.

We can surmise a lot about the origin of black holes from their size. Scientists know how some types of black holes form, yet the formation of others is a mystery. There are three different types of black holes, categorized by their size: stellar-mass, intermediate-mass, and supermassive black holes.

Stellar-mass black holes are found throughout our Milky Way galaxy and have masses less than about 100 times that of our Sun. They comprise one of the possible endpoints of the lives of high-mass stars. Stars are fueled by the nuclear fusion of hydrogen, which forms helium and other elements deep in their interiors. The outflow of energy from the central regions of the star provides the pressure necessary to keep the star from collapsing under its own weight.

A bubble if gas is sucked into a swirl of glowing dust and gas around a black hole as hair-like whisps extend from the top and bottom of the swirl.

This illustration shows a binary system containing a stellar-mass black hole called IGR J17091-3624. The strong gravity of the black hole, on the left, is pulling gas away from a companion star on the right. This gas forms a disk of hot gas around the black hole, and the wind is driven off this disk. Image credit: NASA/CXC/M.Weiss | › Full image and caption

Once the fuel in the core of a high-mass star has completely burned out, the star collapses, sometimes producing a supernova explosion that releases an enormous amount of energy, detectable across the electromagnetic spectrum. If the star’s mass is more than about 25 times that of our Sun, a stellar-mass black hole can form.

Intermediate-mass black holes have masses between about 100 and 100,000 times that of our Sun. Until recently, the existence of intermediate-mass black holes had only been theorized. NASA’s Chandra X-ray Observatory has identified several intermediate-mass black hole candidates by observing X-rays emitted by the gas surrounding the black hole. The Laser Interferometer Gravitational Wave Observatory, or LIGO, funded by the National Science Foundation, detected the merger of two stellar-mass black holes with masses 65 and 85 times that of our Sun forming an intermediate-mass black hole of 142 solar masses. (Some of the mass was converted to energy and about nine solar masses were radiated away as gravitational waves.)

Supermassive black holes contain between a million and a billion times as much mass as a stellar-mass black hole. Scientists are uncertain how supermassive black holes form, but one theory is that they result from the combining of stellar-mass black holes.

A scale on the bottom shows mass (relative to the Sun) from 1 to 1 million and beyond. Stellar-mass black holes are shown on the left side of the scale between about 10 and 100 solar masses, followed on the right by intermediate-mass black holes from 100 to over 100,000 stellar masses followed by supermassive black holes from about 1 million on.

This chart illustrates the relative masses of super-dense cosmic objects, ranging from white dwarfs to the supermassive black holes encased in the cores of most galaxies. | › Full image and caption

Our local galactic center’s black hole, Sagittarius A*, is a supermassive black hole with a mass of about four million suns, which is fairly small for a supermassive black hole. NASA’s Hubble Space Telescope and other telescopes have determined that many galaxies have supermassive black holes at their center.

A bright-white collection of stars is surrounded by a berry colored swirl of stellar dust and stars.

This image shows the center of the Milky Way galaxy along with a closer view of Sagittarius A*. It was made by combining X-ray images from NASA's Chandra X-ray Observatory (blue) and infrared images from the agency's Hubble Space Telescope (red and yellow). The inset shows Sgr A* in X-rays only, covering a region half a light year wide. Image credit: X-ray: NASA/UMass/D.Wang et al., IR: NASA/STScI | › Full image and caption

Why They're Important

Black holes hold allure for everyone from young children to professional astronomers. For astronomers, in particular, learning about Sagittarius A* is important because it provides insights into the formation of our galaxy and black holes themselves.

Understanding the physics of black hole formation and growth, as well as their surrounding environments, gives us a window into the evolution of galaxies. Though Sagittarius A* is more than 26,000 light years (152 quadrillion miles) away from Earth, it is our closest supermassive black hole. Its formation and physical processes influence our galaxy as galactic matter continually crosses the event horizon, growing the black hole’s mass.

Studying black holes also helps us further understand how space and time interact. As one gets closer to a black hole, the flow of time slows down compared with the flow of time far from the black hole. In fact, according to Einstein’s theory of general relativity, the flow of time slows near any massive object. But it takes an incredibly massive object, such as a black hole, to make an appreciable difference in the flow of time. There's still much to learn about what happens to time and space inside a black hole, so the more we study them, the more we can learn.

How Scientists Imaged Sagittarius A*

Black holes, though invisible to the human eye, can be detected by observing their effects on nearby space and matter. As a result of their enormous mass, black holes have extremely high gravity, which pulls in surrounding material at rapid speeds, causing this material to become very hot and emit X-rays.

This video explains how Sagittarius A* appears to still have the remnants of a blowtorch-like jet dating back several thousand years. Credit: NASA | Watch on YouTube

X-ray-detecting telescopes such as NASA’s Chandra X-ray Observatory can image the material spiraling into a black hole, revealing the black hole’s location. NASA’s Hubble Space Telescope can measure the speed of the gas and stars orbiting a point in space that may be a black hole. Scientists use these measurements of speed to determine the mass of the black hole. Hubble and Chandra are also able to image the effects of gravitational lensing, or the bending of light that results from the gravitational pull of black holes or other high-mass objects such as galaxies.

A bright central blob is surrounded by blue halos and whisps forming a sort of target pattern.

The thin blue bull's-eye patterns in this Hubble Space Telescope image are called "Einstein rings." The blobs are giant elliptical galaxies roughly 2 to 4 billion light-years away. And the bull's-eye patterns are created as the light from galaxies twice as far away is distorted into circular shapes by the gravity of the giant elliptical galaxies. | › Full image and caption

To directly image the matter surrounding a black hole, thus revealing the silhouette of the black hole itself, scientists from around the world collaborated to create the Event Horizon Telescope. The Event Horizon Telescope harnesses the combined power of numerous telescopes around the world that can detect radio-wave emissions from the sky to create a virtual telescope the size of Earth.

Narrated by Caltech’s Katie Bouman, this video explains how she and her fellow teammates at the Event Horizon Telescope project managed to take a picture of Sagittarius A* (Sgr A*), a beastly black hole lying 27,000 light-years away at the heart of our Milky Way galaxy. Credit: Caltech | Watch on YouTube

In 2019, the team released the first image of a black hole's silhouette when they captured the glowing gasses surrounding the M87* galactic black hole nearly 53 million light-years (318 quintillion miles) away from Earth. The team then announced that one of their next endeavors was to image Sagittarius A*.

A warm glowing ring surrounds an empty blackness.

Captured by the Event Horizon Telescope in 2019, this image of the the glowing gasses surrounding the M87* black hole, was the first image ever captured of a black hole. Image credit: Event Horizon Telescope Collaboration | + Expand image

To make the newest observation, the Event Horizon Telescope focused its array of observing platforms on the center of the Milky Way. A telescope array is a group of telescopes arranged so that, as a set, they function similarly to one giant telescope. In addition to the telescopes used to acquire the M87* image, three additional radio telescopes joined the array to acquire the image of Sagittarius A*: the Greenland Telescope, the Kitt Peak 12-meter Telescope in Arizona, and the NOrthern Extended Millimeter Array, or NOEMA, in France.

This image of the center of our Milky Way galaxy representing an area roughly 400 light years across, has been translated into sound. Listen for the different instruments representing the data captured by the Chandra X-ray Observatory, Hubble Space Telescope, and Spitzer Space Telescope. The Hubble data outline energetic regions where stars are being born, while Spitzer's data captures glowing clouds of dust containing complex structures. X-rays from Chandra reveal gas heated to millions of degrees from stellar explosions and outflows from Sagittarius A*. Credit: Chandra X-ray Observatory | Watch on YouTube

The distance from the center of Sagittarius A* to its event horizon, a measurement known as the Schwarzschild radius, is enormous at seven million miles (12,000,000 kilometers or 0.08 astronomical units). But its apparent size when viewed from Earth is tiny because it is so far away. The apparent Schwarzschild radius for Sagittarius A* is 10 microarcseconds, about the angular size of a large blueberry on the Moon.

Acquiring a good image of a large object that appears tiny when viewed from Earth requires a telescope with extraordinarily fine resolution, or the ability to detect the smallest possible details in an image. The better the resolution, the better the image and the more detail the image will show. Even the best individual telescopes or array of telescopes at one location do not have a good enough resolution to image Sagittarius A*.

A dense field of stars like grains of sand is surrounded by wispy clouds of glowing gas and dust.

This image captured by NASA's Hubble Space Telescope shows the star-studded center of the Milky Way towards the constellation of Sagittarius. Even though you can't see our galaxy's central black hole directly, you might be able to pinpoint its location based on what you've learned about black holes thusfar. Image credit: NASA, ESA, and G. Brammer | › Full image and caption

The addition of the 12-meter Greenland Telescope, though a relatively small instrument, widened the diameter, or aperture, of the Event Horizon Telescope to nearly the diameter of Earth. And NOEMA – itself an array of twelve 15-meter antennas with maximum separation of 2,500 feet (760 meters) – helped further increase the Event Horizon Telescope’s light-gathering capacity.

Altogether, when combined into the mighty Event Horizon Telescope, the virtual array obtained an image of Sagittarius A* spanning about 50 microarcseconds, or about 1/13th of a billionth the span of the night sky.

A slightly oblong donut-shaped ring of glowing warm dust especially bright at spots on the top, left, and right surrounds a black hole.

Sagittarius A* is more than 26,000 light years (152 quadrillion miles) away from Earth and has the mass of 4 million suns. Image credit: Event Horizon Telescope | › Full image and caption

While the Event Horizon Telescope was busy capturing the stunning radio image of Sagittarius A*, an additional worldwide contingent of astronomical observatories was also focused on the black hole and the region surrounding it. The aim of the team, known as the Event Horizon Telescope Multiwavelength Science Working Group, was to observe the black hole in other parts of the electromagnetic spectrum beyond radio. As part of the effort, X-ray data were collected by NASA’s Chandra X-ray Observatory, Nuclear Spectroscopic Telescope (NuSTAR), and Neil Gehrels Swift Observatory, additional radio data were collected by the East Asian Very Long-Baseline Interferometer (VLBI) network and the Global 3 millimeter VLBI array, and infrared data were collected by the European Southern Observatory’s Very Large Telescope.

The data from these multiple platforms will allow scientists to continue building their understanding of the behavior of Sagittarius A* and to refine their models of black holes in general. The data collected from these multiwavelength observations are crucial to the study of black holes, such as the Chandra data revealing how quickly material falls in toward the disk of hot gas orbiting the black hole’s event horizon. Data such as these will hopefully help scientists better understand black hole accretion, or the process by which black holes grow.

Teach It

Check out these resources to bring the real-life STEM of black holes into your teaching, plus learn about opportunities to involve students in real astronomy research.

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Articles

Educator Guides

How Do We See Dark Matter?

Students will make observations of two containers and identify differences in content, justify their claims and make comparisons to dark matter observations.

Subject Science

Grades 6-12

Time < 30 mins

Student Activities

Black Holes: By the Numbers

What are black holes and how do they form?

Subject Science

Grades 4-12

Time Less than 30 mins

Check out these related resources for students from NASA’s Space Place

What is a Black Hole?

Across the NASA-Verse

This Teachable Moment was created in partnership with NASA’s Universe of Learning. Universe of Learning materials are based upon work supported by NASA under award number NNX16AC65A to the Space Telescope Science Institute, working in partnership with Caltech/IPAC, Center for Astrophysics | Harvard & Smithsonian, and the Jet Propulsion Laboratory.

TAGS: Black hole, Milky Way, galaxy, universe, stars, teachers, educators, lessons, Teachable Moments, K-12, science

ABOUT THE AUTHOR

Ota Lutz, K-12 Education Group Manager, NASA-JPL Education Office

Ota Lutz is the manager of the K-12 Education Group at NASA’s Jet Propulsion Laboratory. When she’s not writing new lessons or teaching, she’s probably cooking something delicious, volunteering in the community, or dreaming about where she will travel next.

Learn about the role that dust plays in Earth's climate, why scientists are interested in studying dust from space, and how to engage students in the science with STEM resources from JPL.

A NASA instrument launched to the International Space Station this summer will explore how dust impacts global temperatures, cloud formation, and the health of our oceans. The Earth Surface Mineral Dust Source Investigation, or EMIT, is the first instrument of its kind, designed to collect measurements from space of some of the most arid regions on Earth to understand the composition of soils that generate dust and the larger role dust plays in climate change.

Read on to find out how the instrument works and why scientists are hoping to learn more about the composition of dust. Then, explore how to bring the science into your classroom with related climate lessons that bridge physical sciences with engineering practices.

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Why It's Important
How It Works
Teach It

Why It’s Important

Scientists have long studied the movements of dust. The fact that dust storms can carry tiny particles great distances was reported in the scientific literature nearly two centuries ago by none other than Charles Darwin as he sailed across the Atlantic on the HMS Beagle. What still remains a mystery all these years later is what that dust is made of, how it moves, and how that affects the health of our planet.

For example, we now know that dust deposited on snow speeds up snow melt even more than increased air temperature. That is to say, that dust traveling to cold places can cause increased snow melt.

Sharp mountain peaks are covered in splotches of snow with a fine coating of dust visible on top of the snow.

A coating of dust on snow speeds the pace of snowmelt in the spring. Credit: NASA | + Expand image

Dust can affect air temperatures as well. For example, dust with more iron absorbs light and can cause the air to warm, while dust with less iron reflects light and is responsible for local cooling. Iron in dust can also act as a fertilizer for plankton in oceans, supplying them with nutrients needed for growth and reproduction.

A plume of dust eminates from over the Copper River in Alaska, spreading out as this series of overhead satellite images progresses.

A plume of dust is shown emanating from over Alaska's Copper River in October 2016 in these images captured by the Moderate Resolution Imaging Spectroradiometer, or MODIS, instrument on NASA’s Terra and Aqua satellites. Dust storms play a key role in fueling phytoplankton blooms by delivering iron to the Gulf of Alaska. Credit: NASA | › Full image and caption

Floating dust potentially alters the composition of clouds and how quickly or slowly they form, which can ultimately impact weather patterns, including the formation of hurricanes. That’s because clouds need particles to act as seeds around which droplets of moisture in the atmosphere can form. This process of coalescing water particles, called nucleation, is one factor in how clouds form.

An overhead view of a swirl of clouds mixed with a streak of dust like a swirl of milk froth in a cappuccino

A swirl of dust mixes with the clouds in a low-pressure storm over the Gobi desert between Mongolia and China. This image was captured by the MODIS instrument on the Terra satellite in May 2019. Credit: NASA | › Full image and caption

Thanks to EMIT, we’ll take the first steps in understanding how the movements of dust particles contribute to local and global changes in climate by producing “mineral maps”. These mineral maps will reveal differences in the chemical makeup of dust, providing essential information to help us model the way dust can transform Earth’s climate.

› Learn more about what EMIT will do from JPL News

How It Works

NASA has been exploring how dust moves across the globe by combining on-the-ground field studies with cutting-edge technology.

Dr. Olga Kalashnikova, an aerosol scientist at NASA's Jet Propulsion Laboratory and a co-investigator for EMIT, has been using satellite data to study atmospheric mineral dust for many years, including tracking the movements of dust and investigating trends in the frequency of dust storms.

As Dr. Kalashnikova describes, “From the ground, we can see what types of dusts are lifted into the atmosphere by dust storms on a local scale, but with EMIT, we can understand how they differ and where they originally came from.”

EMIT is the first instrument designed to observe a key part of the mineral dust cycle from space, allowing scientists to track different dust compositions on a global scale, instead of in just one region at a time. To understand dust’s impact on Earth’s climate, scientists will use EMIT to answer key questions, including:

How does dust uplifted in the atmosphere alter global temperatures?
What role do dusts play in fertilizing our oceans when they are deposited?
How do dust particles in the atmosphere affect cloud nucleation; the process by which clouds are ‘seeded’ and begin to coalesce into larger clouds?

A picture of the EMIT instrument, shaped like a small megaphone, is overlaid on an picture of the International Space Station flying above Earth.

The EMIT instrument will fly aboard the International Space Station, which orbits Earth about once every 90 minutes, completing about 16 orbits per day. Credit: NASA | + Expand image

To achieve its objectives, EMIT will spend 12 months collecting what are called “hyperspectral images” of some of the most arid regions of our planet selected by scientists and engineers as areas of high dust mobility, such as Northern Africa, the Middle East, and the American Southwest.

These images are measurements of light reflected from the Earth below, calibrated to the distinct patterns, or spectra, of light we see when certain minerals are present. The EMIT team has identified 10 minerals that are most common, including gypsum, hematite, and kaolinite.

Bands of satellite images looking at a seciton of Earth are highlighted in different colors to reveal different concentrations of minerals.

This example spectra shows how scientists will be able to identify different concentrations of minerals and elements in data collected by EMIT. Credit: NASA/JPL-Caltech | + Expand image

Why are these minerals important? One key reason is the presence or absence of the element iron, found in some minerals but not others.

Dr. Bethany Ehlmann is a planetary scientist and co-investigator for the EMIT project at Caltech and explains that when it comes to heating, “a little bit of iron goes a long way.” Iron in minerals absorbs visible and infrared light, meaning that even if only a small amount is present, it will result in a much warmer dust particle. Large amounts of warm dust in our atmosphere may have an impact on temperatures globally since those dust particles radiate heat as they travel, sometimes as far as across oceans!

Collecting images from space is, of course, no easy task, especially when trying to look only at the ground below. Yet it does allow scientists to get a global picture that's not possible to capture from the ground. Field studies allow us to take individual samples from tiny places of interest, but from space, we can scan the entire planet in remote places where no scientist can visit.

The International Space Station flies over Earth as a radar beam shines down over a desert area, making a colorful data map of its obversations.

Event: EMIT Launch

Learn more about the launch and find out how to get students engaged with the project using STEM education resources from JPL.

Of course, there are some complications in trying to study the light reflected off the surface of Earth, such as interference from clouds. To prevent this problem, the EMIT team plans to collect data at each location several times to ensure that the images aren’t being obscured by clouds between the instrument and the minerals we’re looking for.

The data collected by EMIT will provide a map of the compositions of dust from dry, desert environments all over the world, but the team involved won’t stop there. Knowing more about what the dust is made of sets the stage for a broader understanding of a few more of the complex processes that make up our global climate cycle. Upon completion of this study, EMIT's mineral maps will support further campaigns to complete our global dust picture. For example, NASA hopes to couple the data from EMIT with targeted field campaigns, in which scientists can collect wind-blown dust from the ground to learn more about where dust particles move over time and answer questions about what types of dust are on the go.

Furthermore, missions such as the Multiangle Imager for Aerosols, or MAIA, will allow us to better understand the effects of these dust particles on air-quality and public health.

Teach it

Studying Earth’s climate is a complex puzzle, consisting of many trackable features. These can range from sea level to particles in our atmosphere, but each makes a contribution to measuring the health of our planet. Bring EMIT and NASA Earth Science into your classroom with these lessons, articles, and activities to better understand how we’re exploring climate change.

Educator Guides

Student Activities

Articles

Websites

TAGS: Earth, climate, geology, weather, EMIT, Teachers, Classroom, Lessons, Earth Science, Climate Change, Dust, Global Warming, Educators, K-12, Teachable Moments, Climate TM

ABOUT THE AUTHOR

Brandon Rodriguez, Educator Professional Development Specialist, NASA-JPL Education Office

Brandon Rodriguez is the educator professional development specialist at NASA’s Jet Propulsion Laboratory. Outside of promoting STEM education, he enjoys reading philosophy, travel and speaking to your dog like it's a person.

This fourth-grade teacher is finding creative ways to get her students back into the flow of classroom learning with the help of STEAM education resources from JPL.

Jackie Prosser is a fourth-grade teacher in Fairfield, California, finishing her second year as a classroom teacher. She is a recent graduate of the University of California, Riverside, where she simultaneously received her teaching credential and her master's in education. This was where I was fortunate enough to meet Miss Prosser, through a collaboration between the Education Office at NASA's Jet Propulsion Laboratory and UCR designed to help new teachers incorporate STEM into their future classrooms. She and her cohort immediately struck me as passionate future teachers already exploring unique ways to bring space science into their teaching.

But it's been a challenging transition for Miss Prosser and teachers like her who started their careers amid a pandemic. She began her student-teaching in person only to find that she would have to switch to teaching remotely just four months into the job. Now, she's back in the classroom but facing new challenges getting students up to speed academically while reacquainting them with the social aspects of in-person learning.

I caught up with her to find out how she's managing the transition and developing creative ways to support the individual needs of her students and, at the same time, incorporating science and art into her curriculum with the help of STEAM resources from the JPL Education Office.

Resources for Teachers

Bring the wonder of space to your students. Explore our universe of science, technology, engineering and math activities and resources.

What made you want to become an elementary school teacher?

Originally, I became a teacher because I love to see that moment of light when a concept finally clicks in a kid’s mind. I am still a teacher (even after the craziest two years ever) because every kid deserves someone to fight for them, and I know I can be that person for at least 32 kids a year.

I love to teach young kids especially for two reasons. The first is their honesty; no one will tell you exactly like it is like a nine-year-old will. The second is that I love the excitement kids have for learning at this age.

It has been a bumpy couple years, especially this past school year when it was unclear if we would be remote again or back in the classroom. How has it been coming back from remote learning?

Coming back from remote learning has been an incredible challenge, but we’ve come a long way since the beginning of the year. Students really struggled being back in a highly structured environment. It was very hard to balance meeting the individual needs of each student and getting them used to the structure and expectations of the classroom.

My fourth graders were online for the last part of second grade and a vast majority of third grade. This is when students really start to solve conflicts and regulate their emotions with less support from adults. I have seen a lot more problems with emotion regulation and conflict among my students this year than in years past.

There is a lot of pressure on teachers right now to make up for all the learning loss and for students being behind on grade-level standards. But I don’t think enough people talk about how much joy and social interaction they also lost during remote learning. Teachers are also feeling the pressure of that. I want to help my students be the very best versions of themselves and being happy and comfortable with themselves is a huge part of that.

A student looks at a page from the NASA Solar System Exploration website. Image courtesy: Jackie Prosser | + Expand image

How do you structure your class to get students back in the flow of a school setting?

I use a lot of manipulatives in my math lessons and try to make their learning as hands-on as possible. I also teach math in small groups to be able to better meet the individual needs of my students. I have one group with me learning the lesson, one group doing their independent practice of the skill, and one group on their computers. Then, the students switch until each group has done each activity.

You’re a big fan of science and came to several JPL Education workshops while you were still in school yourself. Are there JPL Education resources that you have found particularly impactful for your students?

I have always loved teaching science. It is so often left behind or pushed aside. I think a lot of time that happens because teachers feel like they do not have enough background knowledge to teach high-quality science lessons or they think that the lessons will add to the already enormous workload teachers have. My district does not have an adopted or prescribed curriculum for teachers to follow, so we have a lot of freedom for when and how to make the time for STEAM.

The education resources [from NASA's Jet Propulsion Laboratory] have made it so easy for me to teach and get kids excited about science, and my kids absolutely love them. Our favorites always seem to be Make a Paper Mars Helicopter and Art and the Cosmic Connection.

A student holds a paper Mars helicopter. Image courtesy: Jackie Prosser | + Expand image

I also am part of my district’s science pilot program. It has been so cool to be able to decide what curriculum to pilot and watch my students test it out and give feedback on their learning. Last year, I had the amazing opportunity to teach science for two elementary schools’ summer programs. My partner teacher and I got to create the curriculum for them, and we pulled a ton of lessons from the JPL Education website. It was by far the most fun I have ever had at a job.

Despite being a new teacher, you’ve already seen so much. How have you navigated the changing landscape?

I have an amazing network of teachers supporting me at every turn. My grade-level team and my friends from my credential program are some of the most amazing people and educators I have ever met. There is no way I would be able to get through the more difficult aspects of teaching without them.

I am also coaching the boys soccer team, directing the school’s "Lion King Jr." play, contributing to the science pilot program, and serving on the social committee for teachers and staff. I love using these different roles to make connections with not just my students, but also students from all grades.

Looking for ways to bring NASA STEM into your classroom or already have a great idea? The Education Office at NASA's Jet Propulsion Laboratory serves educators in the greater Los Angeles area. Contact us at education@jpl.nasa.gov.

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TAGS: Teachers, School, Remote School, Classroom, Instruction, K-12, Fourth Grade, STEAM, Science, Math, Art, UC Riverside, resources, lessons

ABOUT THE AUTHOR

Brandon Rodriguez, Educator Professional Development Specialist, NASA-JPL Education Office

Brandon Rodriguez is the educator professional development specialist at NASA’s Jet Propulsion Laboratory. Outside of promoting STEM education, he enjoys reading philosophy, travel and speaking to your dog like it's a person.

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