Artist's concept of the Perseverance rover on Mars

Update: July 6, 2020 – Due to processing delays in preparations to unite the spacecraft with the rocket, the first launch attempt will be no earlier than July 30 at 4:50 a.m. PDT (7:50 a.m. EDT). The launch period has been expanded to Aug. 15. Dates updated below. › Read more


Perseverance, NASA's most advanced Mars rover yet, is scheduled to leave Earth for its seven-month journey to the Red Planet this summer.

Only the fifth NASA rover destined for Mars, Perseverance is designed to build on the work and scientific discoveries of its predecessors. Find out more about the rover's science goals and new technologies below. Plus, learn how you can bring the exciting engineering and science of this mission to students with lessons and DIY projects covering topics like biology, geology, physics, mathematics, engineering, coding and language arts.

Why It's Important

Perseverance may look similar to Curiosity – the NASA rover that's been exploring Mars since 2012 – but the latest rover's new science instruments, upgraded cameras, improved onboard computers and new landing technologies make it uniquely capable of accomplishing the science goals planned for the mission.

Diagram of the Perseverance Mars rover's science instruments. Credit: NASA/JPL-Caltech | + Expand image

Looking for signs of habitability

The first of the rover's four science goals deals with studying the habitability of Mars. The mission is designed to look for environments that could have supported life in the past.

Perseverance will land in Jezero Crater, a 28-mile-wide (45-kilometer-wide) crater that scientists believe was once filled with water. Data from orbiters at the Red Planet suggest that water once flowed into the crater, carrying clay minerals from the surrounding area, depositing them in the crater and forming a delta. We find similar conditions on Earth, where the right combination of water and minerals can support life. By comparing these to the conditions we find on Mars, we can better understand the Red Planet's ability to support life. The Perseverance rover is specially designed to study the habitability of Mars' Jezero Crater using a suite of scientific instruments, or tools, that can evaluate the environment and the processes that influence it.

This animated flyover shows the area where Perseverance will land in February 2021 and is narrated by the mission's project scientist, Ken Farley. Credit: NASA/JPL-Caltech | › Learn more about the mission's landing site | Watch on YouTube

Seeking signs of ancient life

The rover's second science goal is closely linked with its first: Perseverance will seek out evidence that microbial life once existed on Mars in the past. In doing so, the mission could make progress in understanding the origin, evolution and distribution of life in the universe – the scientific field known as astrobiology.

It's important to note that the rover won't be looking for present-day life. Instead, its instruments are designed to look for clues left behind by ancient life. We call those clues biosignatures. A biosignature might be a pattern, object or substance that was created by life in the past and can be identified by certain properties, such as chemical composition, mineralogy or structure.

To better understand if a possible biosignature is really a clue left behind by ancient life, we need to look for biosignatures and study the habitability of the environment. Discovering that an environment is habitable does not automatically mean life existed there and some geologic processes can leave behind biosignature-like signs in non-habitable environments.

Collecting samples

Perseverance's third science goal is to gather samples of Martian rocks and soil. The rover will leave the samples on Mars, where future missions could collect them and bring them back to Earth for further study.

Scientists can learn a lot about Mars with a rover like Perseverance that can take in situ (Latin for "on-site") measurements. But examining samples from Mars in full-size laboratories on Earth can provide far more information about whether life ever existed on Mars than studying them on the Martian surface.

Perseverance will take the first step toward making a future sample return possible. The rover is equipped with special coring drill bits that will collect scientifically interesting samples similar in size to a piece of chalk. Each sample will be capped and sealed in individual collection tubes. The tubes will be stored aboard the rover until the mission team determines the best strategic locations on the planet's surface to leave them. The collection tubes will stay on the Martian surface until a potential future campaign collects them for return to Earth. NASA and the European Space Agency are solidifying concepts for the missions that will complete this campaign.

Preparing for future astronauts

Astronauts, an exploration vehicle and a habitat are shown among a rich orange landscape

This artist's concept depicts astronauts and human habitats on Mars. The Perseverance Mars rover will carry a number of technologies that could pave the way for astronauts to explore Mars. Credit: NASA | + Expand image

Like the robotic spacecraft that landed on the Moon to prepare for the Apollo astronauts, the Perseverance rover's fourth science goal will help pave the way for humans to eventually visit Mars.

Before humans can set foot on the Red Planet, we need to know more about conditions there and demonstrate that technologies needed for returning to Earth, and survival, will work. That’s where MOXIE comes in. Short for Mars Oxygen In-Situ Resource Utilization Experiment, MOXIE is designed to separate oxygen from carbon dioxide (CO2) in Mars' atmosphere. The atmosphere that surrounds the Red Planet is 96% CO2. But there's very little oxygen – only 0.13%, compared with the 21% in Earth’s atmosphere.

Oxygen is a crucial ingredient in rocket fuel and is essential for human survival. MOXIE could show how similar systems sent to Mars ahead of astronauts could generate rocket fuel to bring astronauts back to Earth and even create oxygen for breathing.

Join JPL mechanical engineer Mike Meacham to find out how the MOXIE instrument on NASA's Perseverance Mars rover is designed to convert carbon dioxide from Mars' atmosphere into oxygen. Credit: NASA/JPL-Caltech | Watch on YouTube

Flying the first Mars helicopter

Joining the Perseverance rover on Mars is the first helicopter designed to fly on another planet. Dubbed Ingenuity, the Mars Helicopter is a technology demonstration that will be the first test of powered flight on another planet.

The lightweight helicopter rides to Mars attached to the belly of the rover. After Perseverance is on Mars, the helicopter will be released from the rover and will attempt up to five test flights in the thin atmosphere of Mars. After a successful first attempt at lifting off, hovering a few feet above the ground for 20 to 30 seconds and landing, the operations team can attempt incrementally higher and longer-distance flights. Ingenuity is designed to fly for up to 90 seconds, reach an altitude of 15 feet and travel a distance of nearly 980 feet. Sending commands to the helicopter and receiving information about the flights relayed through the rover, the helicopter team hopes to collect valuable test data about how the vehicle performs in Mars’ thin atmosphere. The results of the Mars Helicopter's test flights will help inform the development of future vehicles that could one day explore Mars from the air. Once Ingenuity has completed its technology demonstration, Perseverance will continue its mission on the surface of the Red Planet.

Join JPL mechanical engineer Mike Meacham to learn about the first helicopter designed for Mars. Credit: NASA/JPL-Caltech | Watch on YouTube

How It Works

Before any of that can happen, the Perseverance Mars rover needs to successfully lift off from Earth and begin its journey to the Red Planet. Here's how the launch is designed to ensure that the spacecraft and Mars are at the same place on landing day.

About every 26 months, Mars and Earth are at points in their orbits around the Sun that allow us to launch spacecraft to Mars most efficiently. This span of time, called a launch period, lasts several weeks. For Perseverance, the launch period is targeted to begin at 4:50 a.m. PDT (7:50 a.m. EDT) on July 30 and end on Aug. 15. Each day, there is a launch window lasting about two hours. If all conditions are good, we have liftoff! If there's a little too much wind or other inclement weather, or perhaps engineers want to take a look at something on the rocket during the window, the countdown can be paused, and teams will try again the next day.

Regardless of when Perseverance launches during this period, the rover will land on Mars on Feb. 18, 2021, at around 12:30 PST. Engineers can maintain this fixed landing date because when the rover launches, it will go into what's called a parking orbit around Earth. Depending on when the launch happens, the rover will coast in the temporary parking orbit for 24 to 36 minutes. Then, the upper stage of the rocket will ignite for about seven minutes, giving the spacecraft the velocity it needs to reach Mars.

Like the Curiosity rover, Perseverance will launch from Launch Complex 41 at Cape Canaveral Air Force Station in Florida on an Atlas V 541 rocket – one of the most powerful rockets available for interplanetary spacecraft.

Watch a live broadcast of the launch from the Kennedy Space Center on NASA TV and the agency’s website. Visit the Perseverance rover mission website to explore a full listing of related virtual events and programming, including education workshops, news briefings and conversations with mission experts. Follow launch updates on NASA's Twitter, Facebook and Instagram accounts.

Teach It

The launch of NASA's next Mars rover and the first Mars Helicopter is a fantastic opportunity to engage students in real-world problem solving across the STEM fields. Check out some of the resources below to see how you can bring NASA missions and science to students in the classroom and at home.

Virtual Education Workshops

Lessons for Educators

Activities for Students

Explore More


TAGS: Mars, Mars 2020, Perseverance, Mars Rover, launch, Teach, teachers, educators, parents, lessons, activities, resources, K-12, STEM, events, students, science, engineering

  • Lyle Tavernier
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Farah Alibay, wearing a white lab coat, poses for a photo in front of an engineering model of the Curiosity rover

It only takes minutes into a conversation with Farah Alibay about her job at NASA's Jet Propulsion Laboratory to realize there's nowhere else she'd rather be. An engineer working on the systems that NASA's next Mars rover will use to maneuver around a world millions of miles away, Alibay got her start at JPL as an intern. In the six years since being hired at the Laboratory, she's worked on several projects destined for Mars and even had a couple of her own interns. Returning intern Evan Kramer caught up with Alibay to learn more about her current role with the Mars 2020 Perseverance rover, how her internships helped pave her path to JPL and how she hopes interns see the same "beauty" in the work that she does.

What do you do at JPL?

I’m a systems engineer. I have two jobs on the Mars 2020 Perseverance rover mission right now. One is the systems engineer for the rover's attitude positioning and pointing. It's my job to make sure that once it's on the surface of Mars, the rover knows where it's pointed, and as it's moving, it can update its position and inform other systems of where it is. So we use things like a gyroscope and imagery to figure out where the rover is pointed and where it's gone as it's traveling.

My other job is helping out with testing the mast [sometimes called the "head"] on the rover. I help make sure that all of the commands and movements are well understood and well tested so that once the rover gets to Mars, we know that the procedures to deploy the mast and operate all of the instruments are going to work properly.

This is probably a tough question to answer, but what is an average day like for you?

Right now, I spend a lot of time testing – either developing procedures, executing procedures in the test bed or reviewing data from the procedures to make sure we're testing all of our capabilities. We start off from requirements of what we think we should be able to do, and then we write our procedures to test out those requirements. We test them out with software, and then we come to the test bed to execute them on hardware. Things usually go wrong, so we'll repeat the procedures a few times. Eventually, once we think we've had a successful run, we have a review.

Most of my testing is on the mobility side. However, it hasn't really started in earnest yet since we're waiting for the rover's "Earth twin" [the engineering model] to be built. Once that happens, later this summer, I will be spending a good chunk of my time in the Mars Yard [a simulated Mars environment at JPL], driving the rover around and actually using real data to figure out whether the software is behaving properly.

Watch the latest video updates and interviews with NASA scientists and engineers about the Mars 2020 Perseverance rover, launching to the Red Planet in summer 2020. | Watch on YouTube

What's the ultimate goal of your work at JPL?

All the work that I do right now is in support of the Perseverance rover mission. On the mobility team, we work on essential functions that are going to be used as the rover drives around on Mars.

One of the really neat things about Perseverance is that it can do autonomous driving. So the rover is able to drive up to 200 meters on its own, without us providing any directional information about the terrain. Working on this new ability has been the bulk of testing we're doing on the mobility team. But this new capability should speed up a lot of the driving that we do on Mars. Once we get smart in planning rover movements, we'll be able to plan a day's worth of activity and then tell the rover, "Just keep going until you're done."

You came to JPL as an intern. What was that experience like and how did it shape what you're doing now?

I spent two summers as an intern at JPL during my Ph.D. The first one was in 2012, which was the summer that the Curiosity Mars rover landed. That was a pretty incredible experience. As someone who had only spent one summer at NASA before, seeing the excitement around landing a spacecraft on Mars, well, I think it's hard not to fall in love with JPL when you see that happen. During that summer, I worked on the early days of the A-Team [JPL's mission-concept study team], where I was helping out with some of the mission studies that were going on.

My second summer, I worked in the Mars Program Office, looking at a mission concept to return samples from Mars. I was helping define requirements and look at some of the trade studies. We were specifically looking at designs for orbiters that could bring back samples from Mars. A lot of that fed into my graduate research. It's pretty cool to be able to say that I applied my research and research tools to real problems to help JPL's Mars sample return studies.

What brought you to JPL for your internship? Was working at JPL always a dream for you?

Yeah, working at NASA was always a dream, but going into my Ph.D., I became more and more interested in robotics and planetary exploration. I have a Ph.D. in aerospace engineering, but I also have a minor in planetary science. There are very few places on Earth that really put those two together besides JPL, and it's the only place that has successfully landed a spacecraft on Mars. So, given my passions and my interests, JPL emerged at the top of my list very, very quickly. Once I spent time here, I realized that I fit in. My work goals and my aspirations fit into what people were already doing here.

What moments or memories from your internships stand out the most?

The Curiosity landing was definitely one of the highlights of my first internship.

Another one of the highlights is that JPL takes the work that interns do really seriously. I was initially surprised by that, and I think that's true of every intern I've met. Interns do real work that contributes to missions or research. I remember, for example, presenting some of my work to my mentor, who was super-excited about some of the results I was getting. For me, that was quite humbling, because I saw my research actually helping a real mission. I think I'll always remember that.

How do you think your internship shaped your career path and led to what you're doing now?

My internships definitely opened a lot of doors for me. In particular, during my second internship, I also participated in the Planetary Science Summer School at JPL. Throughout the summer, we met with experts in planetary science to develop a mission concept, and then we came together as a team to design the spacecraft in one week! It was an intense week but also an extremely satisfying one. The highlight was being able to present our work to some of the leading engineers and scientists at JPL. We got grilled, and they found a whole lot of holes in our design, but I learned so much from it. How often do you get to have your work reviewed by experts in the field?

Through these experiences, I made a lot of connections and found mentors who I could reach out to. Since I knew JPL is where I wanted to be, I took it upon myself to knock on every single door and make my case as to why JPL should hire me. I actually never interviewed, because by then, they decided that I had done my own interviews!

My internships and the summer school also gave me an idea of what I wanted to do and what I didn't want to do. So I was a step ahead of other applicants. I always tell interns who come to JPL that if they're not particularly liking their work in the first few weeks, they should take the opportunity to go out and explore what else JPL has to offer. I believe that there's a place for everyone here.

Have you had your own interns before?

I had interns my first two summers working at JPL. Two of my interns are now also full-time employees, and I always remind them that they were my interns when I see them! I also have an intern this summer who I'm extremely excited to work with, as she'll be helping us prepare some of the tools we'll need for operating the Perseverance rover on Mars.

What is your mentorship style with interns?

My goal for interns is mostly for them to learn something new and discover JPL, so I usually let my interns drive in terms of what they want to achieve. Normally, I sit down with them at the start of summer and define a task, because we want them to be doing relevant work. But I encouraged them to take time off from what they're doing and explore JPL, attend events that we have organized for interns and decide whether this is a place for them or not.

It's kind of a dual mentorship. I mentor them in terms of doing their work, but also mentor them in terms of helping them evolve as students and as early career engineers.

What do you hope they take away from their experience?

I hope they take advantage of this unique place and that they fall in love with it the way I did. Mostly, though, I'm hoping they discover whether this is a place for them or not. Whatever it is, I want them to be able to find their passion.

What would be your advice for those looking to intern or work at JPL one day?

I think the way into JPL, or whatever career that you're going to end up in, is to be 100% into what you're doing. If you're in school, studying aerospace engineering or mechanical engineering, do hands-on projects. The way I found opportunities was through the Planetary Science Summer School and the Caltech Space Challenge, which were workshops. I also did something called RASC-AL, which is a different workshop from the National Institute of Aerospace. Do all of those extracurricular things that apply your skills and develop them.

If you have the opportunity to attend talks, or if your advisor gives you extra work that requires you to reach out to potential mentors, take the time to do it.

My other piece of advice is to knock on doors and talk to people who do something in your field that you're interested in. Don't be shy, and don't wait for opportunities to come to you. Especially if you're already at JPL, or if you have mentors that are. Leverage that network.

Last question: If you could play any role in NASA's mission to send humans back to the Moon and eventually on to Mars, what would it be?

I chose to come to JPL because I like working on robotic missions. However, a lot of these robotic missions are precursors to crewed lunar and Mars missions. So I see our role here as building up our understanding of Mars and the Moon [to pave the way for future human missions].

I've worked on different Mars missions, and every one has found unexpected results. We're learning new things about the environment, the soil and the atmosphere with every mission. So I already feel like my work is contributing to that. And especially with the Perseverance rover mission, one of its main intentions is to pave the way for eventually sending humans to Mars.


Explore JPL’s summer and year-round internship programs and apply at: jpl.nasa.gov/intern

Career opportunities in STEM and beyond can be found at: jpl.jobs

The laboratory’s STEM internship and fellowship programs are managed by the JPL Education Office. Extending the NASA Office of STEM Engagement’s reach, JPL Education seeks to create the next generation of scientists, engineers, technologists and space explorers by supporting educators and bringing the excitement of NASA missions and science to learners of all ages.

TAGS: Mars, Mars Rover, Perseverance, Mars 2020, Mars 2020 Interns, PSSS, Planetary Science Summer School, Internships, Workshops, Career Advice, Mentors

  • Evan Kramer
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Adrien Dias-Ribiero stands in the gallery above the clean room at JPL and points down at engineers in building the Mars 2020 rover.

Adrien Dias-Ribiero poses for a photo in the gallery above the clean room at JPL with the Mars 2020 rover behind him.

With microbes capable of living in the harshest environments and life-affirming chemical compounds that can arise from the right mixture of heat and materials, the job of keeping spacecraft as contamination-free as possible is not an easy one. This was the task of French aerospace engineering student Adrien Dias-Ribeiro this past summer when he joined the team building the Perseverance Mars rover as a contamination-control engineering intern. With the rover set to collect the first samples of Martian rock and soil for a possible return to Earth, the team at NASA's Jet Propulsion Laboratory has to ensure the sample-collection system stays "clean" throughout its journey to Mars. We caught up with Dias-Ribeiro to find out how he's contributing to the mission and what brought him to JPL from France.

What are you working on at JPL?

I'm working in contamination control engineering for the Perseverance Mars rover mission. I am working, specifically, on the part of Perseverance that is designed to collect samples that could eventually be returned to Earth one day.

Perseverance is looking to measure the presence of organic carbons, like methane, and search for evidence of past microbial life on Mars, so our job is to be sure that contamination on the rover doesn't interfere with what it's trying to study. All the material [used to build the science instruments on the rover] naturally emits some carbons, so we just try to reduce them as much as possible. We've done several tests on the materials used in the science instruments on the rover. My job is to take the results of the tests and make models to predict whether we're meeting the requirements that are needed. We cannot go above a certain level of contamination or the mission will not meet its requirements.

Watch the latest video updates and interviews with NASA scientists and engineers about the Mars 2020 Perseverance rover, launching to the Red Planet in summer 2020. | Watch on YouTube

What is your average day like?

It's mostly coding. I take some measurements and I read them in Python [a programming language]. I also read articles about people doing this kind of work and try to improve their models or produce the models at JPL.

Where do you go to school, and what are you studying?

I go to ISAE-SUPAERO, the aerospace university in Toulouse, France. I'm studying space engineering.

What brought you to JPL for this internship?

I've done another internship in a similar area at the European Space Agency, but I was really interested to be part of the kinds of projects we have at JPL, like the Perseverance rover and Europa Clipper. I also really wanted to work internationally with a different culture than I'm used to. So I got some contacts with my previous supervisors. They knew people working here, so they recommended me.

I feel really lucky to be at JPL as a French person. One year ago, it was not imaginable that I would be at JPL, so I feel really grateful to be here.

What is the most uniquely JPL or NASA experience you've had so far?

I think it's when I was in the clean room [where the Perseverance rover is being built]. I was able to be one meter away from the rover and the descent vehicle [that will help land the rover on Mars].

Some people on my team had to do some measurements in the clean room and asked if I wanted to go with them, and so I did. I wasn't able to touch anything [laughs]. I just looked. I'm working on models of the rover, so it was really interesting to go closer to the hardware and the real spacecraft. I'd also never been inside the clean room before.

How do you feel you are contributing to the mission and making it a success?

I feel really lucky because the job I'm doing now will be directly applied to ensuring that the mission meets its requirements, which is to not go above the limit of organic carbon emitted by the hardware in charge of collecting the samples.

What is your ultimate career goal?

I'm really interested in systems engineering, so I'm trying to learn as much as possible about different types of engineering, modeling and how to manage projects.

If you could play any role in NASA's plans to send humans back to the Moon or on to Mars, what would you want to do?

I guess a lot of people would say, "Be an astronaut," but I really like living here on Earth, so I think I wouldn't really want to be an astronaut. If I could ensure the safety of the astronauts going to the Moon or Mars, that's the kind of job I would like to do.


Explore JPL’s summer and year-round internship programs and apply at: jpl.nasa.gov/intern

Career opportunities in STEM and beyond can be found at: jpl.jobs

The laboratory’s STEM internship and fellowship programs are managed by the JPL Education Office. Extending the NASA Office of STEM Engagement’s reach, JPL Education seeks to create the next generation of scientists, engineers, technologists and space explorers by supporting educators and bringing the excitement of NASA missions and science to learners of all ages.

TAGS: Higher Education, Internships, STEM, Engineering, Interns, College, Robotics, Mars, Rover, Mars 2020, Coding, Computer Science, Mars 2020 Interns, Perseverance

  • Kim Orr
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Tiffany Shi poses for a photo in front of a steel and glass building at JPL with the words "Flight Projects Center" displayed on the front of the building.

Deciding where to land on Mars has always meant striking the right balance between potential science wins and the risk of mission failure. But new technology that will allow NASA's next Mars rover, Perseverance, to adjust its trajectory to the safest spot within an otherwise riskier landing area is giving science its biggest edge yet. This past summer, it was intern Tiffany Shi's task to help prepare the new technology, called the Lander Vision System, for its debut on Mars. Analyzing data from test flights in California's Death Valley, the Stanford University student joined the team at NASA's Jet Propulsion Laboratory to make sure the new landing system will work as designed, guiding the Perseverance rover to a safe landing as the spacecraft speeds toward the surface into Mars' Jezero Crater. We caught up with Shi to find out what it was like to work on the technology, how she managed the 8-to-5 and how she found a new approach to problem solving.

What are you working on at JPL?

I'm working with the Mars 2020 mission, building the lander system for the Perseverance Mars rover. This is new technology in that [as the rover is landing on Mars] it is going to be able to look down at the surface below and figure out where is the safest place to land within the chosen area. Because of this technology, we're going to be able to land in a place that's more geologically and scientifically interesting than anywhere else we've been on Mars.

How did previous Mars landings work?

Before, it was only really safe to land if we picked a huge, flat area and programmed the spacecraft to land somewhere in there. But for the Mars 2020 mission, the spacecraft will take images of the terrain below as it descends into the atmosphere and will match those images to reference maps that we have from the work of previous missions. This will allow us to autonomously detect potential landing hazards and divert our spacecraft from them. In other words, the spacecraft is going to be able to look below and find the safest place to land in an area that's generally more hazardous [than what previous rovers have landed in].

What is your average day like on the project?

My average day consists of coming here at 8. That is very new for me [laughs]. I sit in the basement with two office mates, and we each work on our own things. I'm doing error analysis to find any bugs in the Lander Vision System, which is what will be used to land the rover on Mars. The algorithm for the landing system is pretty much written, and I'm analyzing the field-test data that they got from the tests that were done in Death Valley in February. Both my office mates are also working on the Lander Vision System, but they're not on the same exact project. They are all super-nice and helpful, and we all talk about our work, so it's a lot of fun.

Watch the latest video updates and interviews with NASA scientists and engineers about the Mars 2020 Perseverance rover, launching to the Red Planet in summer 2020. | Watch on YouTube

Tell me more about the field tests and how you're analyzing the results.

In February, the team took a helicopter and they attached a copy of the Lander Vision System to the front. The helicopter did a bunch of nosedives and spirals over the terrain, which is really similar to what the rover will see on Mars. The goal is to see how accurate our predictions are for our algorithm relative to our reference maps. We're using the tests to improve our algorithm before the spacecraft launches.

What are you studying at Stanford?

I'm not sure what my major will be yet. I don't have to declare it until the end of my second year. I've only just finished my freshman year. I'm thinking maybe computer science or a mix of computer science and philosophy, because I really like both.

What got you interested in those majors?

I did debate in high school, and a lot of debaters use philosophy to argue different perspectives. So that's what got me started.

What about the computer science side?

I was in Girls Who Code while I was in high school, and there were JPL mentors who came to my school every Friday and taught us everything that we wanted to know. It was a super-fun place, super-inclusive. You see a lot of shy girls who don't normally talk in classes really open up. They had great debates, great questions, and it was just really cool to see.

Had you had any experience coding before that?

No, but I started taking some classes after that, and I did an internship at Caltech my junior year.

What was the internship at Caltech?

It was actually with Christine Moran, who now works at JPL. When she was doing her postdoc at Caltech, she brought in 12 high-school student interns through a program called Summer App Space. I worked in a team that classified galaxies into 36 different categories using training and test images from an online machine-learning community.

Very cool! What has been the most uniquely JPL or NASA experience that you've had while you've been here?

I went to see the rover being built in the clean room with my mentor, and that was just surreal. Even though I am sure my contributions are going to be very small, I think it's wild that I am actually working on something that's going to Mars.

Has your internship opened your eyes to any potential career paths?

I haven't taken any aeronautics and astronautics classes, and I think I might see if I'm interested in studying that. It is so interesting working on something that is literally going to be in space. In college, you have an answer to work towards, and here you are finding the answer. I think I didn't really process what I was going to be doing before coming here.

Eventually, I know I want to go into computer science, but also I want to go into maybe social impact work. I'd love to find some intersection between those. I feel like I grew up really privileged, so I want to use my skills to help other people. But I do love computer science or something where I'd be really at the forefront of research.

If you could play any role in NASA's plans to send humans back to the Moon or on to Mars, what would you want to do?

Be there. I met Jessica Watkins, who used to intern here, and now she's one of the new NASA astronauts. She spoke to us during my Caltech internship. It was super surreal meeting her. So if I could play any part, I'd want to be up there.


Explore JPL’s summer and year-round internship programs and apply at: jpl.nasa.gov/intern

Career opportunities in STEM and beyond can be found at: jpl.jobs

The laboratory’s STEM internship and fellowship programs are managed by the JPL Education Office. Extending the NASA Office of STEM Engagement’s reach, JPL Education seeks to create the next generation of scientists, engineers, technologists and space explorers by supporting educators and bringing the excitement of NASA missions and science to learners of all ages.

TAGS: Higher Education, Internships, STEM, Engineering, Interns, College, Robotics, Mars, Rover, Mars 2020, Landing, Mars 2020 Interns, Perseverance

  • Kim Orr
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Illustration of spacecraft on a light purple background that reads "NASA Pi Day Challenge"

Update: March 16, 2020 – The answers to the 2020 NASA Pi Day Challenge are here! View the illustrated answer key (also available as a text-only doc).


In the News

Our annual opportunity to indulge in a shared love of space exploration, mathematics and sweet treats has come around again! Pi Day is the March 14 holiday that celebrates the mathematical constant pi – the number that results from dividing any circle's circumference by its diameter.

Infographic of all of the Pi in the Sky 7 graphics and problems

Visit the Pi in the Sky 7 lesson page to explore classroom resources and downloads for the 2019 NASA Pi Day Challenge. Image credit: NASA/JPL-Caltech | + Expand image

Overhead view of Mars with a comparison of the smaller landing ellipse made possible by Range Trigger technology

A new Mars landing technique called Range Trigger is reducing the size of the ellipse where spacecraft touch down. Image credit: NASA/JPL-Caltech | › Full image and caption

Composite image of the Kuiper Belt object Arrokoth from NASA's New Horizons spacecraft. Image credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/Roman Tkachenko | › Full image and caption

Diagram of an airplane flying over a section of ocean with an example of the spectral data that CORAL collects

The CORAL mission records the spectra of light reflected from the ocean to study the composition and health of Earth's coral reefs. Image credit: NASA | + Expand image

Rays of bright orange and red shoot out diagonally from a blue circle surrounding the star Beta Pictoris

The star Beta Pictoris and its surrounding debris disk in near-infrared light. Image credit: ESO/A.-M. Lagrange et al. | › Full image and caption

Besides providing an excuse to eat all varieties of pie, Pi Day gives us a chance to appreciate some of the ways NASA uses pi to explore the solar system and beyond. You can do the math for yourself – or get students doing it – by taking part in the NASA Pi Day Challenge. Find out below how to test your pi skills with real-world problems faced by NASA space explorers, plus get lessons and resources for educators.

How It Works

The ratio of any circle's circumference to its diameter is equal to pi, which is often rounded to 3.14. But pi is what is known as an irrational number, so its decimal representation never ends, and it never repeats. Though it has been calculated to trillions of digits, we use far fewer at NASA.

Pi is useful for all sorts of things, like calculating the circumference and area of circular objects and the volume of cylinders. That's helpful information for everyone from farmers irrigating crops to tire manufacturers to soup-makers filling their cans. At NASA, we use pi to calculate the densities of planets, point space telescopes at distant stars and galaxies, steer rovers on the Red Planet, put spacecraft into orbit and so much more! With so many practical applications, it's no wonder so many people love pi!

In the U.S., 3.14 is also how we refer to March 14, which is why we celebrate the mathematical marvel that is pi on that date each year. In 2009, the U.S. House of Representatives passed a resolution officially designating March 14 as Pi Day and encouraging teachers and students to celebrate the day with activities that teach students about pi.

The NASA Pi Day Challenge

This year's NASA Pi Day Challenge poses four puzzlers that require pi to compare the sizes of Mars landing areas, calculate the length of a year for one of the most distant objects in the solar system, measure the depth of the ocean from an airplane, and determine the diameter of a distant debris disk. Learn more about the science and engineering behind the problems below or click the link to jump right into the challenge.

› Take the NASA Pi Day Challenge
› Educators, get the lesson here!

Mars Maneuver

Long before a Mars rover touches down on the Red Planet, scientists and engineers must determine where to land. Rather than choosing a specific landing spot, NASA selects an area known as a landing ellipse. A Mars rover could land anywhere within this ellipse. Choosing where the landing ellipse is located requires compromising between getting as close as possible to interesting science targets and avoiding hazards like steep slopes and large boulders, which could quickly bring a mission to its end. In the Mars Maneuver problem, students use pi to see how new technologies have reduced the size of landing ellipses from one Mars rover mission to the next.

Cold Case

In January 2019, NASA's New Horizons spacecraft sped past Arrokoth, a frigid, primitive object that orbits within the Kuiper Belt, a doughnut-shaped ring of icy bodies beyond the orbit of Neptune. Arrokoth is the most distant Kuiper Belt object to be visited by a spacecraft and only the second object in the region to have been explored up close. To get New Horizons to Arrokoth, mission navigators needed to know the orbital properties of the object, such as its speed, distance from the Sun, and the tilt and shape of its orbit. This information is also important for scientists studying the object. In the Cold Case problem, students can use pi to determine how long it takes the distant object to make one trip around the Sun.

Coral Calculus

Coral reefs provide food and shelter to many ocean species and protect coastal communities against extreme weather events. Ocean warming, invasive species, pollutants, and acidification caused by climate change can harm the tiny living coral organisms responsible for building coral reefs. To better understand the health of Earth's coral reefs, NASA's COral Reef Airborne Laboratory, or CORAL, mission maps them from the air using spectroscopy, studying how light interacts with the reefs. To make accurate maps, CORAL must be able to differentiate among coral, algae and sand on the ocean floor from an airplane. And to do that, it needs to calculate the depth of the ocean at every point it maps by measuring how much sunlight passes through the ocean and is reflected upward from the ocean floor. In Coral Calculus, students use pi to measure the water depth of an area mapped by the CORAL mission and help scientists better understand the status of Earth's coral reefs.

Planet Pinpointer

Our galaxy contains billions of stars, many of which are likely home to exoplanets – planets outside our solar system. So how do scientists decide where to look for these worlds? Using data gathered by NASA's Spitzer Space Telescope, researchers found that they're more likely to find giant exoplanets around young stars surrounded by debris disks, which are made up of material similar to what's found in the asteroid belt and Kuiper Belt in our solar system. Sure enough, after discovering a debris disk around the star Beta Pictoris, researchers later confirmed that it is home to at least two giant exoplanets. Learning more about Beta Pictoris' debris disk could give scientists insight into the formation of these giant worlds. In Planet Pinpointer, put yourself in the role of a NASA scientist to learn more about Beta Pictoris' debris disk, using pi to calculate the distance across it.

Participate

Join the conversation and share your Pi Day Challenge answers with @NASAJPL_Edu on social media using the hashtag #NASAPiDayChallenge

Blogs and Features

Related Lessons for Educators

Related Activities for Students

NOAA Video Series: Coral Comeback

Multimedia

Facts and Figures

Missions and Instruments

Websites

TAGS: K-12 Education, Math, Pi Day, Pi, NASA Pi Day Challenge, Events, Space, Educators, Teachers, Parents, Students, STEM, Lessons, Problem Set, Mars 2020, Perseverance, Curiosity, Mars rovers, Mars landing, MU69, Arrokoth, New Horizons, Earth science, Climate change, CORAL, NASA Expeditions, coral reefs, oceans, Spitzer, exoplanets, Beta Pictoris, stars, universe, space telescope

  • Lyle Tavernier
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Vivian Li holds a computer and poses for a photo in front of a full-size model of the Mars rover Curiosity.

To remotely operate NASA's next Mars rover on a planet millions of miles away, mission team members will need to carefully plan out every drive, head swivel and arm extension before sending their coded commands to the vehicle. A wrong move could jeopardize the mission and, at the least, eat into the rover's precious energy supply. So this past summer, it was intern Vivian Li's task to design a web tool that will let mission operators ensure they're sending all the right moves to Mars. The internship at NASA's Jet Propulsion Laboratory gave Li, an information and computer science major at Cornell University, a chance to bring her design skills to a team that's typically more focused on building interfaces for robots rather than for humans. We caught up with Li to learn how she's adding a human touch to robotic navigation on the Mars 2020 mission.

What are you working on at JPL?

I'm working on a user interface for the Mars 2020 rover that takes in commands and produces a 3D simulation of the commands. So a rover driver could input what they want the rover to do – for example, drive 100 meters forward – and then, based on the terrain and all the other external factors, the program would take in the commands and simulate the path of the rover.

Is this something completely new for Mars 2020?

They've had the simulation software for a really long time. This is just a different way to package it and for people to be able to easily use it. The current version only runs on certain computers, so we're moving it to a web-based platform that can run on pretty much any modern browser.

What's your average day like at JPL?

I get in around 7:30 a.m., and at that time I just sort of warm up for the day in that I don't do anything that's super-taxing. I check my meetings and get set up. Then right after that, I jump into what I need to do. Right now, my primary project is creating the front end for the interface, writing a little bit of code and fixing bugs in the flight software simulation for Mars 2020.

If I'm not in meetings, I'll be writing code all day and doing a lot of planning. I'm in a different office than my team, so me and my co-intern will sometimes ask for help with our project, but it's a lot of independent work. It's great because my co-intern and I help each other a lot. Our mentors tell us what they want – like yesterday, they wanted us to incorporate a camera view into the simulation – then, we're the ones who figure out how to do it.

Pretty soon, we'll be going into user testing. There are a couple of people who would actually be using the technology who volunteered to test it out. Once they do, we can edit it based on how they feel about what we have right now.

What has been the most uniquely JPL or NASA experience that you've had so far?

Two things: First, just getting to stroll in and watch the Mars 2020 rover being built in the clean room. Second is meeting the people who work here. The people here all share a similar love of science and exploration research, which is really different from how a lot of computer science is oriented. All the engineers and even people who are in physics or communications share a common goal. I've learned so much from just talking to people and even other interns. It's been so cool, because I don't really get that exposure at school.

What made you decide to study information and computer science?

I actually went into college studying biology and English. I had done a year of coding in my senior year of high school, so I knew a little bit of [the programming language] Python. When I got to college, I decided to study biology, and I kind of started orienting toward computational biology. I worked in a lab, and the people there told me, "If you have computer science skills, you can kind of go into any field you want." So I had this career crisis moment when I was like, "I don't want to study biology anymore," because I had been in a microbiology lab all summer and it was not very fun. I figured if I did computer information sciences, it would give me more time to decide.

Even though I know a lot of people here have a lot more experience than me and they started a lot younger, I feel like my skills are so much more adaptable now, and that is what made me stay in the major.

So you still wanted to have that science focus?

Yeah. I don't want to fully isolate myself from the thing that I wanted to study originally, because I still do love biology, just not the career path that goes with it.

What about the user-interface side? Is that something that you're interested in, or did you get thrown into it for your internship?

That's what's special about my major in computer information science: Not only are we technically-based, but also we're user-and-society-based. So for our core classes, we take communications, law, ethics and policy, and all that. Through all those classes, I learned just how important the user-interface side is and accessibility design, and just how much easier life gets if the engineer really understands the user. I think having a good understanding of society and technology is what we should all be focusing on.

Are you bringing some of that user focus to your work with the Mars 2020 mission?

With my mentors being more on the software side and my co-intern being more on the development side, I think my having the user-interface design skills is unique in a very technical workspace. For Mars 2020, even though I'm not working on the design of the rover or one of the software systems, being here allows me to reinforce that the users are still really important, and we want to make it as easy as possible for someone to understand the technology even though it's super-complex.

What brought you to JPL for this internship?

A year and a half ago, I went on a trip to Texas with my friend from school. She brought her friend from home, who brought his friend. The two of them had interned at JPL. They spent the entire week talking about JPL nonstop, on all of our hikes [laughs]. I had never met people who loved their work so much that they wanted to talk about it 24/7. That made me think that JPL must be a great workplace and somewhere that everyone is really passionate. Since then, I've just wanted to come here.

How do you feel you're contributing to the Mars 2020 mission and making it a success?

I feel like the work I am doing is really important. And because I'm bringing a unique skill set to my team, it makes me feel like I'm valued at JPL. I've also been working with other teams who might also want to use my software. Because of that, I think that this concept could be developed for other missions and be really useful in the future as well.

What is your ultimate career goal?

I don't know yet. I just really wanted to work at JPL this summer because I felt like I would get exposed to a lot more. I think now I'm more stressed, because I have seen so many things I want to do [laughs]. But I definitely want to be somewhere in the realm of tech and society. My overarching goal is that I want to have an ethical career, something that can help humanity. And I think JPL is doing that.

If you could play any role in NASA's plans to send humans to the Moon or on to Mars, what would it be?

I really enjoy the work I'm doing now and would love to continue doing that in the future. I don't think I personally want to be an astronaut. I want to stay on Earth for everything that this planet has to offer.


Explore JPL’s summer and year-round internship programs and apply at: jpl.nasa.gov/intern

Career opportunities in STEM and beyond can be found at: jpl.jobs

The laboratory’s STEM internship and fellowship programs are managed by the JPL Education Office. Extending the NASA Office of STEM Engagement’s reach, JPL Education seeks to create the next generation of scientists, engineers, technologists and space explorers by supporting educators and bringing the excitement of NASA missions and science to learners of all ages.

TAGS: Higher Education, Internships, STEM, Engineering, Interns, College, Robotics, Mars, Rover, Mars 2020, Coding, Computer Science, Mars 2020 Interns, Perseverance

  • Kim Orr
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Max Rudolph crosses his arms and smiles at the camera standing in front of a glass window that looks down on the In-Situ Instrument Laboratory

Max Rudolph has had Mars rovers on the brain for as long as he can remember, and this past summer, as an intern at NASA's Jet Propulsion Laboratory, he joined the team building the most advanced Mars rover ever. His role was to find bugs in the software that directs the precise movements of cameras that serve as the literal eyes of the rover and ensure that every swivel of the rover's cartoon-like "head" goes off without a hitch. For the Georgia Institute of Technology student, it was a step into a world beyond his electrical engineering major, but one to which he found he was well suited. We caught up with Rudolph between shifts in the In-Situ Instrument Laboratory, where engineers test spacecraft components in simulated otherworldly environments, to find out what an average day for him is like on the Mars 2020 mission and what brought him to JPL.

What are you working on at JPL?

I work on the Mars 2020 systems engineering testbed. I do mechanism integration and verification of flight software. Basically, I work with the remote-sensing mast on the rover, running tests to make sure everything works and try to find bugs in the software [we use to operate it].

What is the remote-sensing mast?

It's basically the head and neck of the rover. It kind of juts up off of the deck of the rover and makes it look a bit like WALL-E, the Pixar character. It has science instruments designed to measure the Martian wind and study the chemical composition of rocks and soil, as well as navigation cameras that serve as the "eyes" of the rover.

What kinds of tests are you running?

This summer, I've mostly been testing the cameras and the movements of the remote-sensing mast. So we move the remote-sensing mast around, use the cameras on the front of the mast to take pictures and see whether it can do what it's designed to do. We get instructions from the subsystem engineers, the people who designed and built different parts of the mast [such as the cameras and science instruments]. We try out the movements and commands they designed to see if they actually work when the whole system is together.

What's your average day like?

There are two types of days I have. Some days I have shifts in the testbed, and other days, I do work at my desk. When I'm in the testbed, I run tests and run through procedures with the remote-sensing mast on a replica [or engineering model] of the rover.

The rest of my time is spent preparing or wrapping up work I did when I was in the testbed. For example, before I run procedures in the testbed, I send the software commands we're going to use to test the mast through a simulation that tells me if they are valid or not. After I run a test, I note what changes I made to the procedure, and what worked and what didn't work, so I can refer to it later.

Where do you go to school, and what are you studying?

I'm going to Georgia Tech, studying electrical engineering.

What got you interested in studying electrical engineering?

I don't know how I got into it [laughs]. A lot of people ask me, "Why electrical engineering?" Not often, "Why engineering?" I think I chose electrical engineering because it's a very broad field. At school, I focus on controls and signal processing. I also do research in robotics for various professors.

But here, I'm not doing that at all. This is a systems engineering lab, and I've never done systems engineering. I am doing robotics, but it's very different from my classes. Kareem Badaruddin, who's my group supervisor, says, "We recruit a lot of electrical engineers. They usually know the skills. They have a base knowledge."

So I think I chose electrical engineering because there's a lot of variation in what you can do with your degree. You can go into software, robotics or hardware design and circuits. There are a lot of opportunities.

As far as what got me into engineering, I don't remember a time when I didn't want to do this.

What brought you to JPL?

This is one of those places that I have known about for years. I'm 20, so I probably learned about JPL in eighth grade. I was interested in working here because everything is going to space – there's nothing cooler than that. Being here is something I always thought about wanting to do, and now I have the opportunity.

Was there a particular mission or event that lead you to JPL?

It probably was Curiosity or maybe the [Mars Exploration rovers, Spirit and Opportunity]. I always had the rovers in the back of my mind – even before I knew that JPL built them. One day, I found my way to the JPL website, and I was like, "Oh, these spacecraft are all built here."

How do you hope you're contributing to this mission and making it a success?

I hope I find any issues that exist in the system so we can fix them before the rover goes to Mars. It's a good thing if we find an issue with the rover when we test it because now we can fix it, and that's one less thing that can fail when the rover is millions of miles away on Mars. My main goal is to learn and contribute as much as I can.

What has been the most uniquely JPL or NASA experience that you've had while you've been here?

People might think it's humdrum, but I think it's really cool: I worked on a side project, helping with the Mars Helicopter Delivery System, which is a mechanism on the 2020 rover that will place the first helicopter on Mars. We were testing it, and I got to see the first time this thing moved. It wasn't historic like Apollo and wasn't actually landing on Mars, but seeing it – even on a replica of the rover – gave me a lot of pleasure. Like a lot of things at JPL, it was one of a kind.

What's your ultimate career goal?

I know I want to be here, because no one in the world does what JPL does. But just as important, I want to make an impact on the world.

OK, now for a fun question: If you could play any role in NASA's plans to send humans back to the Moon or on to Mars, what would it be?

Ideally, I'd be the one going. But I'd also really like to be part of the team that gets the spacecraft to the Moon or Mars.


Explore JPL’s summer and year-round internship programs and apply at: jpl.nasa.gov/intern

Career opportunities in STEM and beyond can be found at: jpl.jobs

The laboratory’s STEM internship and fellowship programs are managed by the JPL Education Office. Extending the NASA Office of STEM Engagement’s reach, JPL Education seeks to create the next generation of scientists, engineers, technologists and space explorers by supporting educators and bringing the excitement of NASA missions and science to learners of all ages.

TAGS: Higher Education, Internships, STEM, Engineering, Interns, College, Robotics, Mars, rover, Mars 2020, Electrical Engineering, Mars 2020 Interns, Perseverance

  • Kim Orr
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Brandon Ethridge stands in front of a mural made to look like a blueprint on the Mechanical Design Building at JPL.

Bringing the first samples of Martian rock and soil to Earth requires a multi-part plan that starts with NASA's next Mars rover and would end with a series of never-attempted engineering feats – many of which are still the stuff of imagination. So this past summer, Brandon Ethridge joined a team of other interns at NASA's Jet Propulsion Laboratory to bring the concept one step closer to reality. This meant building a small-scale model of something that's never been made before: a vehicle capable of launching off the Martian surface with the precious samples collected by the 2020 Rover in tow and rendezvousing with another spacecraft designed to bring them to Earth. NASA's plans for returning samples from Mars are still early in development and could change. So Ethridge and his team were given a wide berth to dream up new ideas. The project is paving a path not just for Mars exploration, but also for Ethridge himself. Shortly after his internship ended, he graduated from North Carolina A&T State University with a degree in mechanical engineering and accepted a full-time position with the team at JPL that puts spacecraft together and ensures they are working properly. Read on to learn what it's like to envision an entirely new spacecraft for Mars and find out what brought Ethridge to JPL as a first-generation college student.

What are you working on at JPL?

I am working on creating a concept model for a possible future Mars ascent vehicle that would bring samples collected by the Mars 2020 Rover back to Earth. This would be the first time that we would bring samples back from Mars.

NASA is still discussing how we would bring these samples back to Earth, so we're exploring a concept that would be conducted in three stages. The first stage would be to collect the samples and bring them to the Mars ascent vehicle. The second stage would be to use the Mars ascent vehicle to launch into Mars orbit. And the third stage would be to take the spacecraft from orbit back to Earth. I'm primarily working on the second stage. Specifically, I'm working on creating a model of the mechanism that would launch the Mars ascent vehicle from the surface into orbit.

Infographic showing 5 engineering facts about the Mars 2020 rover
Infographic showing 5 engineering facts about the Mars 2020 rover

This infographic shows how the Mars 2020 rover differs from previous Mars rovers. Image credit: NASA/JPL-Caltech | › Learn more

What are the challenges of creating a model of something like this since it's never been done before?

That's definitely one of the challenges. A lot of it is speculation due to our not knowing all the conditions associated with launching anything from another planet. The concept that we're working with is a brand-new design with minimal references, so we're kind of figuring it out as we go. Our group of interns is working to scale down the preliminary design that we got from the engineers to see if it will work on a smaller scale. Then, obviously, you have to account for the changes between Earth and Mars. Even just getting the designs from the engineers has been a struggle, because they're just figuring it out as well.

What's your average day like?

I work with four other interns, and we have two mentors. We've gotten a couple benchmark concepts from the engineers. We're all working to analyze different concepts, comparing and contrasting, and trying to figure out what we think would be best.

Right now, we're in the analysis stage, where we are whittling things down to one specific concept that we want to work towards. We're trying to isolate the exact architecture of the launch mechanism itself, trying to all get on the same page, make sure our numbers match up, and see if we can even theoretically do this. It seems pretty promising – we just have to iron out the kinks.

What's it like working on a team of interns?

We all get along really well, and we're typically all on the same page. We have extroverted personalities, introverted personalities, but we all do pretty well at taking our time to let everyone get their opinions in, so it's a really good team. We bring different perspectives, different specialties. I am very thankful to have a good group of people to work with and fantastic mentors who really let us express ourselves and learn in the process.

How are you working with the engineers who are designing the concepts for this potential future mission?

We're working parallel to them rather than in conjunction with them, which is interesting because they're looking at it as more of a long-term project. Since I'm only here for the 10-week period, my mentors wanted to make sure that I got something out of this. So we're going to scale down the model to expedite the process. Hopefully at the end, we'll be able to present it to the engineers while they're still ironing out their kinks. But it's geared on a tight timeframe, a lot of quick learning.

What are you studying in school?

I am studying mechanical engineering with a concentration in aerospace.

How did you get into that field?

I think it was in middle school that I caught myself always staring at the planes in the sky. I recognized that I really wanted to fly. I wanted to be a pilot for a long time. But then, as I got a little bit older, I recognized that even the pilots aren't familiar with how the planes work exactly or the process that gets them there. I was just fascinated with the phenomenon in itself, where you can take this massive vehicle made of metal and make it appear lighter than air. So I decided to study engineering. I didn't really have any guidance toward it. It just happened that I liked planes, I looked into career options online and that lead me toward engineering and aerospace.

Is anyone else in your family involved in STEM?

No. I'm a first-generation college student. My brother-in-law is a civil engineering professor at Morgan State, and he's helped me a lot. He has been my mentor from the beginning. We don't talk all the time, but he's the one who kind of set me in a direction and told me, "All right, time to go."

How did you find out about the JPL internship and decide to apply?

I got an email one day before an info session was happening on my campus at North Carolina A&T. I had a class at that time, so I didn't think I was going to go, but the class ended early. I ended up attending the info session and speaking with Jenny Tieu and Roslyn Soto [who manage JPL's HBCU initiative]. I brought a resume, and Roslyn critiqued it for me and told me, "You have good experience. Resubmit this with these changes and see how it goes." That's how it worked out.

Did you have any idea that you wanted to come to JPL at some point?

I didn't even know what JPL was, if I'm honest. When I first saw the email, I read, "Jet Propulsion Laboratory," and I thought, "Oh, this sounds interesting." Then I was like, "Wait, this is NASA!" Coming from not knowing or learning about it growing up or being familiar with it, you kind of have to figure things out as you go. It's a little embarrassing to say that I'm here and I didn't even know about this place about a year ago. But at the same time, I figured it out and that's kind of how it goes. Just learn as you go.

What has been your impression of JPL so far?

I love it here. I've been working since I was legally able to work, and this is the first time I've ever enjoyed my job. I'm a night person, but I'm waking up early perfectly fine – not complaining about it, not having bad days. Every day, it's been really good for me. That's something that I don't take for granted, because I've worked jobs that I didn't like in the past. Being out here, being around the people at JPL, it's a really cool experience. It's also my first time away from the East Coast, so I'm just completely thrown into it. I love it. It's been a really great experience.

What's your ultimate career goal?

It's hard for me to say for sure because I have a lot of aspirations. I love the idea of continuing to work with NASA, working on things that are going to space and potentially getting into some of the human space flight projects going on. But I'm also very interested in management positions, maybe learning about some of the business side. Right now, I'm just taking all the experiences for what they are. I know that I want to be in and around aerospace, but as far as in what capacity – whether that's aerodynamics, systems engineering, mechanical engineering – I'm still trying to figure that out.

How do you feel you're contributing to NASA and JPL missions and science?

If we can finish our project by the end of the summer – which would kind of be impressive in itself – and prove that our design does work and is capable of being scaled up to use for an actual Mars ascent vehicle, then I'm sure that would be valuable. Not to mention, I'm learning a lot while I'm here, understanding a lot more and familiarizing myself with everything. So hopefully I can contribute in the future, too.

How does it feel to be working on something that could go to another planet and has never been tried before?

Honestly, it's somewhat unreal to be working on something that's so important and so new. It's not monotonous work. It's not like you're just punching numbers. Everything that I'm working on has the potential to be implemented in some sense for the very first time on another planet. That's something that makes me excited to go to work every day.

Speaking of historic missions: If you could play any role in NASA's plans to send humans back to the Moon or on to Mars, what would your dream role be?

I would love to go. But if our launcher mechanism works, there's no reason we couldn't use it for applications on the Moon or on Mars. I also really like the idea of being in mission control, working with the astronauts, working with the Space Station or Gateway in the future.

Have you ever considered applying to be an astronaut?

Only recently. It's one of those things that if you don't grow up with it in your scope, you don't acknowledge it as a possibility. It's just something that doesn't really seem attainable.

Throughout my college career and my life, I've been realizing that almost anything is attainable. It's just going to take time and effort. So [being an astronaut] is something that I was actually looking into last night, and recently, I was having a discussion with my mentors about it. It's definitely something that I think I'll try to do.

What inspired you to start looking into being an astronaut?

I have always had a fascination with the natural world and been enamored with the night sky. Becoming an astronaut had never been on my radar as a possibility, but seeing the world from a perspective beyond its surface is what motivated me to want to become a pilot, which eventually materialized into pursuing engineering. Once I did research and recognized that astronauts really are regular people with similar interests to mine, I began looking into it as a possibility.

Also, the idea of seeing these worlds for myself is something that I can't really get past.

What's been the most JPL- or NASA-unique experience that you've had during your internship?

Probably the fact that everything is just open to you. The work going on at my previous internship was only shared on a need-to-know basis. Here, everyone is very open to telling you what they're doing. They're open to showing you what's going on, all the brand-new things being built. You can just walk around and look at them. It makes it so much more exciting to be here because it's not that you're just placed on one project and stuck with it. It's, "Please explore." They encourage it. "Please come learn and experience everything."

You recently accepted a full-time position at JPL. Congrats! What is the position and what will you be working on?

Thank you! I am thrilled for the opportunity. I will be working in the Flight Systems Engineering, Integration & Test Section. Interestingly, I am not sure which group I will be in yet, because I was offered the position on the spot, at the conclusion of a day of interviews. I was told by my section manager that they are unsure which group I will work in specifically but that they want me to be a part of their team for sure. The plan is for me to start in June 2020.


Explore JPL’s summer and year-round internship programs and apply at: jpl.nasa.gov/intern

Career opportunities in STEM and beyond can be found at: jpl.jobs

The laboratory’s STEM internship and fellowship programs are managed by the JPL Education Office. Extending the NASA Office of STEM Engagement’s reach, JPL Education seeks to create the next generation of scientists, engineers, technologists and space explorers by supporting educators and bringing the excitement of NASA missions and science to learners of all ages.

TAGS: Higher Education, Internships, STEM, Engineering, Interns, College, Robotics, Mars, Rover, Mars 2020, Mars Sample Return, HBCU, Students, Careers, Mars 2020 Interns, Perseverance

  • Kim Orr
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Samalis Santini De Leon poses for a photo with a jar of lucky peanuts in JPL's Space Flight Operations Center.

They've been called the minutes of terror – the moments during which spacecraft perform a series of seemingly impossible maneuvers to get from the top of Mars' atmosphere down to its surface and mission controllers anxiously await the signal heralding a successful landing. This past summer, it was intern Samalis Santini De Leon's task to make sure that when NASA's next Mars rover lands in February 2021, those minutes are as terror-free as possible. That meant bringing her Ph.D. research on the process known as entry, descent and landing, or EDL, to NASA's Jet Propulsion Laboratory, where she could apply it to a real space mission. The Puerto Rico native says she never imagined she would one day play a key role in landing a spacecraft on the Red Planet – especially as an intern. But now that she's worked on the Mars 2020 mission, she'll be just as anxious as the rest of the team when those final minutes arrive. We caught up with the Texas A&M University student to find out how you test a Mars landing while on Earth and how she set herself on a trajectory to NASA.

What are you working on at JPL?

I'm working on Mars 2020 entry, descent and landing simulations. I'm evaluating different scenarios, such as a hardware failure, and I'm trying to assess whether the mission will still land safely on Mars. I'm making sure that the system is robust enough that even if something goes wrong, the mission is not in danger and can still land safely. After all that work, we want the rover to land in one piece and do the science we want to do.

What does entry, descent and landing entail?

It's a series of events and maneuvers required to land safely on a planet. So once you enter the atmosphere, there are things you have to do – steps to ensure that the vehicle lands safely.

Graphic showing how Mars 2020 will land on the Red Planet

This graphic shows the new technology that will be used to land the Mars 2020 rover in February 2021. Image credit: NASA/JPL-Caltech | › Take an interactive look at the Mars 2020 landing

What's different about this landing from the one used for NASA's Curiosity Mars rover?

One difference is that we have a new trigger for deploying the spacecraft's parachute. This trigger will help reduce the landing footprint size, meaning we can land closer to the intended landing spot. The mission will also be using Terrain Relative Navigation for the first time. The rover will take images of the surface as it's descending and compare them to its onboard reference maps so it can locate itself with respect to the landing site and avoid any hazards.

What's your average day like?

It's mostly gathering all the concerns from other people on the entry, descent and landing team. Then I run simulations, and I look at the overall behavior of the system and communicate with the teams about what's happening. For example, if there was a hardware concern, I would do simulations to analyze the system's performance and ensure there's no significant effect on the success of the mission.

On the side, I'm doing my Ph.D. work in entry, descent and landing, using artificial intelligence to help analyze very large simulations and communicate critical issues to the experts. As humans, there is only so much we can analyze manually. We hope that these tools can help engineers for future missions.

Santini De Leon sits in the Space Flight Operations center at JPL in a room with red and blue lighting and looks up at a screen showing live spacecraft communications.

Image credit: NASA/JPL-Caltech | + Expand image

What lead you to focus on entry, descent and landing for your Ph.D.?

I have no idea. [Laughs.] I did my undergraduate work in mechanical engineering back in Puerto Rico, where I'm from. I volunteered on a project run by Space Grant, building experiments that involved launching sounding rockets from NASA's Wallops Flight Facility. I started to get into space at that time. After that, I tried to pursue aerospace engineering, which is not a possibility in Puerto Rico. So I left Puerto Rico, and I ended up initially working with satellites. Then my advisor said, "I have a friend in EDL, and he's talked about the challenges. Why don't we write a proposal on this?" I got a NASA Science and Technology Research Fellowship for that, and now I'm doing EDL. I was always secretly leaning towards space exploration and getting my hands on a mission.

What made you want to study mechanical engineering initially?

I think it was the closest I could get to aerospace engineering back home. Also, space is very interdisciplinary. I always liked robots. Building robots in high school for competitions got me very interested in that.

What brought you to JPL for this internship?

This is my first summer at JPL. With my fellowship, I do rotations at the NASA centers, so I work with people who do similar stuff.

How many different NASA centers have you interned at now?

I've interned at three. I did two summers at NASA's Ames Research Center, last summer at Langley Research Center, now here at JPL. And in my Space Grant project and undergrad, I did frequent visits to Wallops to put our experiments in the rockets, so that was very cool.

That was all part of the buildup to get here. Coming from an island, it seemed not even possible at the time [that I would ever be at NASA].

What were the challenges that you faced coming from Puerto Rico and trying to pursue aerospace engineering?

The options for aerospace engineering in Puerto Rico are limited. But getting into the Space Grant program was a very good thing to expose me to those fields. After that, the hard part was trying to find a place to do my graduate studies outside of Puerto Rico – where to go, how to get in. There's not a lot of orientation back in Puerto Rico about these things, so you're a little bit on your own. After that, the big problem is dealing with grad school. [Laughs.]

What's your ultimate career goal? Do you think you'd like to go back to Puerto Rico someday?

I would definitely like to continue working on space missions for a while. Whether it's here at JPL or other NASA centers. Just the exposure and the experience – nothing can compare to that. But at some point later on, I would like to go back and consider teaching at the University of Puerto Rico to bring back what I've learned. They're trying to make an aerospace department at the university, so I could bring new perspectives and maybe motivate more people to do what I'm doing.

Speaking of future careers: If you could play any role in NASA's plans to send humans back to the Moon and on to Mars, what would you want to do?

Maybe I'm biased now that I'm in EDL, but it's one of the biggest challenges. I think getting enough knowledge and expertise in it and playing a role in landing people on the Moon or on Mars would be incredible, because it's a problem we still haven't found a solution to. Being able to help achieve that by whatever means is probably the most amazing thing I could ever do.

What do you hope to accomplish in your role on the Mars 2020 mission?

I definitely want to demonstrate that they've built an amazing system – that it works. I guess the goals are more personal, like getting exposure to the testing side of things, more of the real-life aspects. I'm more locked on the computer simulations. So I'm hoping to get the whole picture of how EDL works and how it all comes together.

Your mentor is Allen Chen, who is the lead for Mars 2020 entry, descent and landing, so he'll be calling the shots on landing day. What is it like having him as a mentor?

It's amazing. I feel very lucky and very proud that I get to work directly with him. He's someone who has so much expertise. I am learning a lot from him. Just sitting in meetings and hearing what he and the team have to say is amazing. He's great, too – easy to talk to, knows way too much about EDL. [Laughs.]

What's been the most unique experience that you've had at JPL this summer?

What I've found the most shocking is seeing the actual rover that's going to Mars and seeing the rover getting built. That has definitely been quite cool. I think JPL is known for stuff like this. It's here that you can see it and you can see the progress. It also seems like a very collaborative environment. That's not common, so that's really cool.

The rover is scheduled to land in February 2021, after your internship has ended. Will you be able to come back to JPL for landing?

It is possible. My mentor [for my Ph.D.] will definitely be here when the rover arrives on Mars. He'll actually spend two months here doing shifts in mission control. He told me he will try to have me here for that to learn about how it all works. I will definitely try to make that happen. The excitement in that room and the fear will collide. It must be very interesting to be in there.

Are you already picturing what it will be like on landing day?

Yeah. Now that I've had some role in it, wherever I am – whether it's here or at home – I'm going to be freaking out. Regardless of how confident we are, it's a challenging process.


Explore JPL’s summer and year-round internship programs and apply at: jpl.nasa.gov/intern

Career opportunities in STEM and beyond can be found at: jpl.jobs

The laboratory’s STEM internship and fellowship programs are managed by the JPL Education Office. Extending the NASA Office of STEM Engagement’s reach, JPL Education seeks to create the next generation of scientists, engineers, technologists and space explorers by supporting educators and bringing the excitement of NASA missions and science to learners of all ages.

TAGS: Higher Education, Internships, STEM, Engineering, Interns, College, Robotics, Mars, Rover, Mars 2020, Ph.D., Doctorate, Space Grant, Students, Mars 2020 Interns, Perseverance

  • Kim Orr
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