06 September 2012, 02:41 AM ET
The galaxy I Zwicky 18, originally thought to be a young galaxy, actually seems to have formed around the same time as most other galaxies in this space wallpaper.
05 September 2012, 11:45 AM ET
This composite space wallpaper shows a superbubble in the Large Magellanic Cloud (LMC), a small satellite galaxy of the Milky Way, located about 160,000 light years from Earth.
05 September 2012, 12:06 AM ET
This space wallpaper captured the second full Moon of the month – known as a ‘blue’ Moon – just before it disappeared from the MSG-3 satellite’s sight behind the southern hemisphere.
04 September 2012, 03:06 PM ET
This striking space wallpaper shows a beautiful yet peculiar pair of galaxies.
01 September 2012, 02:57 AM ET
A rare second Full Moon of the month, known as a "Blue Moon", is seen over Cincinnati on Friday, Aug. 31, 2012 in this amazing space wallpaper.
30 August 2012, 02:54 PM ET
This cool space wallpaper shows Dawn spacecraft at the giant asteroid Vesta.
30 August 2012, 11:40 AM ET
Saturn's rings obscure part of Titan's colorful visage in this space wallpaper from NASA's Cassini spacecraft.
30 August 2012, 03:14 AM ET
In this space wallpaper, early on August 29, 2012, the Visible Infrared Imaging Radiometer Suite on the Suomi-NPP satellite captured this nighttime view of C and the cities near the Gulf Coast of the United States.
30 August 2012, 02:22 AM ET
This computer generated montage shows Neptune as it would appear from a spacecraft approaching Triton, Neptune's largest moon in this space wallpaper.
30 August 2012, 01:59 AM ET
In this space wallpaper, an artist's concept illustrates Kepler-47, the first transiting circumbinary system -- multiple planets orbiting two suns.
29 August 2012, 02:38 PM ET
In this space wallpaper, the Moon appears large because it is seen close to the horizon and our perception is deceived by the proximity of references on the ground.
28 August 2012, 12:59 PM ET
An experimental camera smaller than an espresso cup on ESA’s Proba-2 microsatellite caught this view of soon-to-be Hurricane Isaac as it moved west of the Florida coast into the Gulf of Mexico on Monday in this space wallpaper.
27 August 2012, 10:56 PM ET
In this space wallpaper, color panorama shows a 360-degree view of the landing site of NASA's Curiosity rover, including the highest part of Mount Sharp.
27 August 2012, 10:41 PM ET
In this space wallpaper, a chapter of the layered geological history of Mars is laid bare in this image from NASA's Curiosity rover.
27 August 2012, 11:47 AM ET
This amazing space wallpaper portrait of the bright star-forming region NGC 346 reveals new information about how stars form.
26 August 2012, 01:22 PM ET
Astronaut John W. Young jumps up from the lunar surface as he salutes the U.S. flag during the Apollo 16 mission.
24 August 2012, 03:25 PM ET
This composite space wallpaper represents the close environment of Beta Pictoris as seen in near infrared light.
23 August 2012, 01:58 PM ET
This stunning space wallpaper shows a Bok globule nicknamed the "caterpillar" appears at the right.
22 August 2012, 01:26 PM ET
A brilliant white core is encircled by thick dust lanes in this spiral galaxy, seen edge-on in this cool space wallpaper.
21 August 2012, 12:09 PM ET
This cool space wallpaper shows the southern part of the spectacular N44 H II region in the Large Magellanic Cloud.
20 August 2012, 02:02 PM ET
This space wallpaper of the luminous blue variable was taken by ESO's Very Large Telescope, yielding an incredible amount of detail.
17 August 2012, 08:01 PM ET
New findings about an extraordinary galaxy cluster discovered by the National Science Foundation’s 10-meter South Pole Telescope in this space wallpaper.
17 August 2012, 02:16 PM ET
This stunning space wallpaper shows the central region of a beautiful spiral galaxy, Messier 83.
16 August 2012, 12:40 PM ET
This amazing space wallpaper reveals the London Olympic Park including Olympic Stadium is visible towards the base of this Proba-1 High Resolution Camera image of East London, acquired on 11 August 2012.
15 August 2012, 07:55 PM ET
This space wallpaper reveals an artist's impression of galaxy at center of Phoenix Cluster.
15 August 2012, 11:44 AM ET
The Milky Way arches across this rare 360-degree panorama of the night sky above the Paranal platform, home of ESO’s Very Large Telescope in this amazing desktop wallpaper.
14 August 2012, 01:45 AM ET
In this space wallpaper, Gale Crater is 154 km wide and is located at latitude 5.4 degrees south and longitude 137.9 degrees east.
13 August 2012, 03:33 PM ET
In this space wallpaper, the Orion Nebula was captured using the Wide Field Imager camera on the MPG/ESO 2.2-metre telescope at the La Silla Observatory, Chile.
13 August 2012, 03:10 PM ET
Night sky watcher Vaibhav Tripathi took this space wallpaper of a Perseid meteor from the Santa Cruz Mountains near Palo Alto, Calif. on August 12, 2012.
10 August 2012, 01:15 PM ET
Dark clouds of dust, called globules, are silhouetted against nearby, bright stars in this space wallpaper. Little is known about the globules, except that they are generally associated with areas of star formation.
09 August 2012, 12:21 PM ET
In this space wallpaper, the Radiation Belt Storm Probes Mission, part of NASA's Living With a Star program, will provide unprecedented insight into the physical dynamics of the radiation belts.
09 August 2012, 11:47 AM ET
This color full-resolution space wallpaper showing the heat shield of NASA's Curiosity rover was obtained during descent to the surface of Mars on Aug. 5 PDT (Aug. 6 EDT).