01 July 2013, 07:00 AM ET
After 10 years in orbit, NASA's GALEX mission is now over. The Galaxy Evolution Explorer mission began in 2003 and officially shut down in 2013.
27 June 2013, 02:01 PM ET
The 36-year-old spacecraft is exploring new realms at the solar system's edge.
26 June 2013, 10:22 AM ET
A previously unsuspected tidal dwarf galaxy candidate (upper left) appears only in the ultraviolet, indicating the presence of many hot young stars as seen in this cool space wallpaper.
24 June 2013, 09:30 AM ET
Looking towards the constellation of Triangulum (The Triangle), in the northern sky, lies the galaxy pair MRK 1034 as seen in this space wallpaper.
21 June 2013, 10:43 AM ET
The NASA/ESA Hubble Space Telescope has captured this cool space wallpaper of nearby spiral galaxy Messier 61, also known as NGC 4303. In this image the galaxy is seen face-on as if posing for a photograph, allowing us to study its structure closely.
20 June 2013, 02:03 PM ET
Two massive galaxies in the process of a violent merger were snapped by the Hubble space telescope in a formation that looks uncannily like a penguin guarding its egg.
18 June 2013, 10:23 AM ET
The contorted object captured by Hubble in this cool space wallpaper is IRAS 22491-1808, also known as the South America Galaxy. It is an ultraluminous infrared galaxy (ULIRG) that emits a huge amount of light at infrared wavelengths.
17 June 2013, 10:06 AM ET
A star of low luminosity (called WX UMa) was seen growing brighter in matter of 160 seconds. It was recorded by astrophysicits at the University of Santiago de Compostela (Spain) and the Byurakan Observatory (Armenia) and is 15.6 light-years away.
17 June 2013, 06:20 AM ET
A normally dull star in Ursa Major gave off an incredible flare.
06 June 2013, 04:35 PM ET
These pioneers may have served as seeds for the supermassive black holes at the hearts of galaxies today.
06 June 2013, 05:42 AM ET
The Knife Edge Galaxy is also known as the Splinter Galaxy.
05 June 2013, 10:16 AM ET
The Atacama Large Millimeter/sub-millimeter Array (ALMA) has imaged a 'dust trap' around a young star where particles clump together to create icy & rocky bodies. The system called Oph-IRS 48 is 400 light-years away in the Ophiuchus constellation.
04 June 2013, 06:30 AM ET
Stars should be at least 8.7 percent as wide as our own sun, researchers say.
03 June 2013, 05:04 PM ET
A star smaller than Jupiter regularly fires off flares as powerful as the biggest eruptions from our sun.
03 June 2013, 03:25 PM ET
Using NASA's Swift satellite, astronomers at NASA and Pennsylvania State University created the most detailed ultraviolet light surveys of the Large and Small Magellanic Clouds, the two closest major galaxies, in a mosaic 14,000 light-years across.
03 June 2013, 02:15 PM ET
Astronomers are witnessing a cosmic death on a galactic scale
30 May 2013, 02:38 PM ET
The small, blue galaxy visible in the upper left corner of the Tadpole ripped through the larger spiral galaxy, distorting it and pulling out a long tail of stars, gas and dust as seen in this cool space wallpaper.
29 May 2013, 05:37 PM ET
Stars that have less salt in their compositions live longer lives, a new study shows.
24 May 2013, 01:06 PM ET
Computer simulations of galaxies growing over billions of years show that cold gas to power stars spirals into the cores of galaxies along spiral filaments.
23 May 2013, 02:01 PM ET
The twin stars of SS Cygni are hundreds of light-years closer to Earth than thought.
22 May 2013, 01:01 PM ET
The find sheds new light on the role such huge collisions played in galactic evolution long ago.
21 May 2013, 09:59 AM ET
This stunning space wallpaper reveals Supernova 1987A in the Large Magellanic Cloud. Glittering stars and wisps of gas create a backdrop for the self-destruction of a massive star.
20 May 2013, 06:50 AM ET
Photographer Christopher Georgia captured this amazing image of the Milky Way Galaxy from Acadia National Park.
08 May 2013, 03:44 PM ET
This intriguing space wallpaper shows the galaxy catalogued as 2MASX J05210136-2521450, which stands out at a glance due to its interesting shape.
08 May 2013, 07:00 AM ET
Amateurs could help shed light on mysterious dark matter and other cosmic phenomena.
07 May 2013, 04:15 PM ET
This cool space wallpaper is an illustration showing a messy, chaotic galaxy undergoing bursts of star formation.
30 April 2013, 10:27 AM ET
Jupiter, Mercury and Venus get together. Using binoculars, see the Virgo Cluster and Sombrero galaxy. The Eta Aquarid meteor shower rains and an annular solar eclipse is viewable in Northern Australia.
29 April 2013, 06:50 AM ET
Veteran skywatcher P-M Heden captured this amazing night sky photo of Comet PanSTARRS and the Andromeda Galaxy over rural Sweden.
23 April 2013, 05:42 PM ET
The galaxy is turning almost all its gas into baby stars.
17 April 2013, 01:01 PM ET
An ancient galaxy is churning out stars nearly 20 times as fast as its modern equivalents.
15 April 2013, 06:00 PM ET
Scientists have conducted a postmortem on the last supernova ever seen by the naked eye in our galaxy.
09 April 2013, 01:29 PM ET
This space wallpaper reveals Galaxy 2MASX J09442693+0429569 imaged by Hubble. This elliptical galaxy has entered a transitional phase from a young, star-forming galaxy to an older, larger, "red and dead" galaxy.
09 April 2013, 09:54 AM ET
NASA is funding two projects to search for exoplanets and has enlisted some the help of two big-name partners.
05 April 2013, 03:59 PM ET
You can see all but a few of the 110 Messier objects in a single night this weekend.
01 April 2013, 11:13 AM ET
The object in this fascinating space wallpaper is Jonckheere 900 or J 900, a planetary nebula — glowing shells of ionised gas pushed out by a dying star.
27 March 2013, 11:45 AM ET
Scientists have been stumped on how baby stars can get so big.