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Observations from NASA's Spitzer Space Telescope, taken in infrared light, have helped to reveal that a small asteroid called 2011 MD is made-up of two-thirds empty space.
Observations from NASA's Spitzer Space Telescope, taken in infrared light, have helped to reveal that a small asteroid called 2011 MD is made-up of two-thirds empty space.

Solid as a Rock? Porosity of Asteroids

NASA's Spitzer Space Telescope has, for the first time, detected tiny quartz-like crystals sprinkled in young planetary systems. The crystals, which are types of silica minerals called cristobalite and tridymite.
NASA's Spitzer Space Telescope has, for the first time, detected tiny quartz-like crystals sprinkled in young planetary systems. The crystals, which are types of silica minerals called cristobalite and tridymite.

Quartz-like Crystals Found in Planetary Disks

Something appears to be peering through a shiny red mask, in this new false-colored image from NASA's Spitzer Space Telescope. The mysterious blue eyes are actually starlight from the cores of two merging galaxies, called NGC 2207 and IC 2163.
Something appears to be peering through a shiny red mask, in this new false-colored image from NASA's Spitzer Space Telescope. The mysterious blue eyes are actually starlight from the cores of two merging galaxies, called NGC 2207 and IC 2163.

Ready for the Cosmic Ball

The 'Ghost of Mirach' galaxy is shown in visible light on the left, and in ultraviolet as seen by NASA's Galaxy Evolution Explorer on the right. The fields of view are identical in both pictures, with the Ghost of Mirach -— a galaxy called NGC 404.
The 'Ghost of Mirach' galaxy is shown in visible light on the left, and in ultraviolet as seen by NASA's Galaxy Evolution Explorer on the right. The fields of view are identical in both pictures, with the Ghost of Mirach -— a galaxy called NGC 404.

'Ghost of Mirach' Rears its Spooky Head

This is an artist's concept of a hypothetical 10-million-year-old star system. The bright blur at the center is a star much like our sun. The other orb in the image is a gas-giant planet like Jupiter.
This is an artist's concept of a hypothetical 10-million-year-old star system. The bright blur at the center is a star much like our sun. The other orb in the image is a gas-giant planet like Jupiter.

Gas Giants Form Quickly (Artist Concept)

This majestic false-color image from NASA's Spitzer Space Telescope shows 'mountains' where stars are born. These towering pillars of cool gas and dust are illuminated at their tips with light from warm embryonic stars.
This majestic false-color image from NASA's Spitzer Space Telescope shows 'mountains' where stars are born. These towering pillars of cool gas and dust are illuminated at their tips with light from warm embryonic stars.

Towering Infernos

This is the first Deep Imaging Survey image taken by NASA's Galaxy Evolution Explorer. On June 22 and 23, 2003, the spacecraft obtained this near ultraviolet image of the Groth region by adding multiple orbits for a total exposure time of 14,000 seconds.
This is the first Deep Imaging Survey image taken by NASA's Galaxy Evolution Explorer. On June 22 and 23, 2003, the spacecraft obtained this near ultraviolet image of the Groth region by adding multiple orbits for a total exposure time of 14,000 seconds.

Deep Imaging Survey

Observations from NASA's Spitzer Space Telescope show that filamentary galaxies form stars at twice the rate of their densely clustered counterparts. This is a representation of galaxies in and surrounding a galaxy cluster called Abell 1763.
Observations from NASA's Spitzer Space Telescope show that filamentary galaxies form stars at twice the rate of their densely clustered counterparts. This is a representation of galaxies in and surrounding a galaxy cluster called Abell 1763.

Celestial Cities and the Roads That Connect Them

This image shows two companion galaxies, NGC 4625 (top) and NGC 4618 (bottom), and their surrounding cocoons of cool hydrogen gas (purple). The huge set of spiral arms on NGC 4625 (blue) was discovered by the ultraviolet eyes of NASA's GALEX.
This image shows two companion galaxies, NGC 4625 (top) and NGC 4618 (bottom), and their surrounding cocoons of cool hydrogen gas (purple). The huge set of spiral arms on NGC 4625 (blue) was discovered by the ultraviolet eyes of NASA's GALEX.

Galactic Halos of Hydrogen

This ultraviolet image from NASA's Galaxy Evolution Explorer is of the globular cluster NGC 1851 in the southern constellation Columba.
This ultraviolet image from NASA's Galaxy Evolution Explorer is of the globular cluster NGC 1851 in the southern constellation Columba.

Globular Cluster NGC 1851 in the Southern Constellation Columba

This image of the nearby edge-on spiral galaxy NGC 55 was taken by NASA's Galaxy Evolution Explorer on September 14, 2003, during 2 orbits. This galaxy lies 5.4 million light years from our Milky Way galaxy.
This image of the nearby edge-on spiral galaxy NGC 55 was taken by NASA's Galaxy Evolution Explorer on September 14, 2003, during 2 orbits. This galaxy lies 5.4 million light years from our Milky Way galaxy.

Galaxy NGC 55

This ultraviolet color image of the galaxy UGC10445 was taken by NASA's Galaxy Evolution Explorer on June 7 and June 14, 2003. UGC10445 is a spiral galaxy located 40 million light-years from Earth.
This ultraviolet color image of the galaxy UGC10445 was taken by NASA's Galaxy Evolution Explorer on June 7 and June 14, 2003. UGC10445 is a spiral galaxy located 40 million light-years from Earth.

Galaxy UGC10445

NASA's Spitzer Space Telescope imaged the mysterious ring around magnetar SGR 1900+14 in infrared light.
NASA's Spitzer Space Telescope imaged the mysterious ring around magnetar SGR 1900+14 in infrared light.

Ghostly Ring

NASA's Galaxy Evolution Explorer and Spitzer Space Telescope combined to show a pair of interacting galaxies might be experiencing the galactic equivalent of a mid-life crisis.
NASA's Galaxy Evolution Explorer and Spitzer Space Telescope combined to show a pair of interacting galaxies might be experiencing the galactic equivalent of a mid-life crisis.

Older Galaxy Pair Has Surprisingly Youthful Glow

This artist's concept shows what a fiery hot star and its close-knit planetary companion might look close up if viewed in visible and infrared light .
This artist's concept shows what a fiery hot star and its close-knit planetary companion might look close up if viewed in visible and infrared light .

Blinded by the Light (Artist Concept)

Bright, young disks can be imaged directly by visible-light telescopes, such as NASA's Hubble Space Telescope. Older, fainter debris disks can be detected only by infrared telescopes like NASA's Spitzer Space Telescope, which sense the disks' dim heat.
Bright, young disks can be imaged directly by visible-light telescopes, such as NASA's Hubble Space Telescope. Older, fainter debris disks can be detected only by infrared telescopes like NASA's Spitzer Space Telescope, which sense the disks' dim heat.

The Evolution of a Planet-Forming Disk (Artist's Concept Animation)

NASA's Spitzer Space Telescope recently captured these infrared images of six older stars with known planets. The yellow, fuzzy blobs are stars circled by disks of dust, or 'debris disks,' like the one that surrounds our own Sun.
NASA's Spitzer Space Telescope recently captured these infrared images of six older stars with known planets. The yellow, fuzzy blobs are stars circled by disks of dust, or 'debris disks,' like the one that surrounds our own Sun.

Is There Anybody Home?

This false-color image from NASA's Spitzer Space Telescope reveals hidden populations of newborn stars at the heart of the colliding 'Antennae' galaxies. These two galaxies are known individually as NGC 4038 and 4039.
This false-color image from NASA's Spitzer Space Telescope reveals hidden populations of newborn stars at the heart of the colliding 'Antennae' galaxies. These two galaxies are known individually as NGC 4038 and 4039.

Fire within the Antennae Galaxies

NASA's Galaxy Evolution Explorer took this image on May 21 and 22, 2003. The image was made from data gathered by the two channels of the spacecraft camera during the mission's
NASA's Galaxy Evolution Explorer took this image on May 21 and 22, 2003. The image was made from data gathered by the two channels of the spacecraft camera during the mission's

GALEX 1st Light Near and Far Ultraviolet -100

Peering deep inside a cluster of several hundred thousand stars, NASA's Hubble Space Telescope has uncovered the oldest burned-out stars in our Milky Way Galaxy, giving astronomers a fresh reading on the age of the universe.
Peering deep inside a cluster of several hundred thousand stars, NASA's Hubble Space Telescope has uncovered the oldest burned-out stars in our Milky Way Galaxy, giving astronomers a fresh reading on the age of the universe.

White Dwarf Stars

This is an ultraviolet color image of the galaxy NGC5398 taken by NASA's Galaxy Evolution Explorer on June 7, 2003. NGC5398 is a barred spiral galaxy located 60 million light-years from Earth.
This is an ultraviolet color image of the galaxy NGC5398 taken by NASA's Galaxy Evolution Explorer on June 7, 2003. NGC5398 is a barred spiral galaxy located 60 million light-years from Earth.

Galaxy NGC5398

This artist's concept based on data fromNASA's Spitzer Space Telescope shows delicate greenish crystals sprinkled throughout the violent core of a pair of colliding galaxies. The white spots represent a thriving population of stars of all sizes and ages.
This artist's concept based on data fromNASA's Spitzer Space Telescope shows delicate greenish crystals sprinkled throughout the violent core of a pair of colliding galaxies. The white spots represent a thriving population of stars of all sizes and ages.

Galactic Hearts of Glass (Artist Concept)

This engineering image derives from 100 seconds of observing time on one of the three science instruments aboard the Space InfraRed Telescope Facility (SIRTF) (now known as the Spitzer Space Telescope).
This engineering image derives from 100 seconds of observing time on one of the three science instruments aboard the Space InfraRed Telescope Facility (SIRTF) (now known as the Spitzer Space Telescope).

SIRTF "Aliveness Test" Image

This image was taken May 21 and 22, 2003 by NASA's Galaxy Evolution Explorer. The image was made from data gathered by the far ultraviolet channel of the spacecraft camera during the mission's 'first light' milestone. It shows about 400 celestial objects
This image was taken May 21 and 22, 2003 by NASA's Galaxy Evolution Explorer. The image was made from data gathered by the far ultraviolet channel of the spacecraft camera during the mission's 'first light' milestone. It shows about 400 celestial objects

GALEX 1st Light Far Ultraviolet

This image was taken May 21 and 22, 2003, by NASA's Galaxy Evolution Explorer. The image was made from data gathered by the two channels of the spacecraft camera during the mission's 'first light' milestone.
This image was taken May 21 and 22, 2003, by NASA's Galaxy Evolution Explorer. The image was made from data gathered by the two channels of the spacecraft camera during the mission's 'first light' milestone.

GALEX 1st Light Near Ultraviolet -50

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