04 September 2013, 03:55 PM ET
This space wallpaper is a comparison of how big the moons of Mars appear to be, as seen from the surface of Mars, in relation to the size that Earth's moon appears to be when seen from the surface of Earth.
03 September 2013, 01:40 PM ET
This fascinating space wallpaper shows the caterpillar-shaped knot, called IRAS 20324+4057, which is a protostar in a very early evolutionary stage. It is still in the process of collecting material from an envelope of gas surrounding it.
30 August 2013, 11:14 AM ET
This space wallpaper shows part of a set of three images revealing views three seconds apart as the larger of Mars' two moons, Phobos, passed directly in front of the sun as seen by NASA's Mars rover Curiosity.
29 August 2013, 12:56 PM ET
A United Launch Alliance (ULA) Delta IV Heavy rocket carrying a payload for the National Reconnaissance Office (NRO) lifts off from Space Launch Complex-6, as seen in this amazing space wallpaper.
29 August 2013, 12:22 PM ET
A United Launch Alliance (ULA) Delta IV Heavy rocket carrying a payload for the National Reconnaissance Office (NRO) lifts off from Space Launch Complex-6 as seen in this space wallpaper.
29 August 2013, 10:15 AM ET
This cool space wallpaper is an artist's concept showing the Wide-field Infrared Survey Explorer, or WISE spacecraft, in its orbit around Earth.
28 August 2013, 11:20 AM ET
The spectacular swirling arms and central bar of the Sculptor galaxy are revealed in this space wallpaper from NASA's Spitzer Space Telescope.
27 August 2013, 11:22 AM ET
This space wallpaper of Herbig-Haro object HH 46/47 combines radio observations acquired with ALMA with much shorter wavelength visible light observations from ESO’s New Technology Telescope.
26 August 2013, 09:22 AM ET
From more than 40 countries and 30 U.S. states, people around the world shared more than 1,400 images of themselves as part of the Wave at Saturn event organized by NASA's Cassini mission as seen in this cool space wallpaper.
23 August 2013, 09:57 AM ET
The northwestern part of Greece is pictured in this space wallpaper by the Landsat-8 satellite. The Ionian Sea dominates the left side of the image, with the Ambracian Gulf near the center.
22 August 2013, 01:27 PM ET
A piercingly bright curtain of stars is the backdrop for this beautiful space wallpaper taken by astronomer Håkon Dahle.
21 August 2013, 12:32 PM ET
This space wallpaper is a color-coded topography map from NASA's Dawn mission, which shows the giant asteroid Vesta.
20 August 2013, 12:19 PM ET
This stunning space wallpaper is a NASA Hubble Space Telescope image of Comet C/2012 S1 (ISON) when the comet was slightly closer than Jupiter's orbit at a distance of 386 million miles (621 km) from the sun.
19 August 2013, 09:28 AM ET
This beautiful space wallpaper portrays the galaxies NGC 799 (below) and NGC 800 (above) located in the constellation of Cetus (The Whale).
16 August 2013, 10:12 AM ET
How many rings do you see in this cool space wallpaper of the galaxy Messier 94, also known as NGC 4736? While at first glance one might see a number of them, astronomers believe there is just one.
15 August 2013, 03:28 PM ET
This space wallpaper of the sun was taken on Aug. 14, 2013 from the premises of European Space Operations Centre in Darmstadt, Germany.
14 August 2013, 10:01 AM ET
This beautiful space wallpaper shows the view to the east from Paranal Observatory, seconds after the sun has disappeared behind the horizon.
13 August 2013, 12:02 PM ET
Astronomers using NASA's Hubble Space Telescope have solved a 40-year mystery on the origin of the Magellanic Stream, a long ribbon of gas stretching nearly halfway around our Milky Way galaxy, as seen in this space wallpaper.
12 August 2013, 12:15 PM ET
ESA astronaut Luca Parmitano took this photo of the Mediterranean and the Pleiades as seen from the International Space Station in this cool space wallpaper. "The Mediterranean, the Pleiades and a storm in the distance," he Tweeted on July 29, 2013.
09 August 2013, 11:39 AM ET
This stunning space wallpaper shows the ancient cratered southern highlands of Mars. Faint traces of a wet past are seen in the form of channels (lower center), fluidized debris around craters (bottom right) and blocks of eroded sediments (top left).
08 August 2013, 10:42 AM ET
This space wallpaper reveals a detailed view of a star-forming region in the Large Magellanic Cloud — one of the Milky Way's satellite galaxies.
07 August 2013, 10:09 AM ET
This cool space wallpaper reveals a very young star being born in the guts of the dark cloud LDN 43 — a massive blob of gas, dust, and ices, gathered 520 light-years from Earth in the constellation of Ophiuchus (The Serpent Bearer).
06 August 2013, 01:33 PM ET
Glowing a dark magenta, the newly discovered exoplanet GJ 504b, as seen in this space wallpaper, weighs in with about four times Jupiter's mass, making it the lowest-mass planet ever directly imaged around a star like the sun.
05 August 2013, 11:45 AM ET
This beautiful space wallpaper shows spiral galaxy Messier 100, located in the southern part of the constellation of Coma Berenices, and lying about 55 million light-years from Earth.
02 August 2013, 10:23 AM ET
This stunning space wallpaper shows the view of the sun from the SWAP (Sun Watcher using Active Pixel System detector and Image Processing) instrument onboard ESA's Proba-2 satellite.
01 August 2013, 02:19 PM ET
This space wallpaper shows the region where carbon monoxide snow has formed around the star. The carbon monoxide is shown here in green, and begins at a distance of more than 30 astronomical units from TW Hydrae.
31 July 2013, 02:47 PM ET
This fascinating space wallpaper records more than a thousand movements made by ESA’s XMM-Newton space telescope as it shifts its gaze from one X-ray object to another.
30 July 2013, 11:44 AM ET
This space wallpaper shows a view of a three-dimensional visualization of gas in the nearby starburst galaxy NGC 253 (The Sculptor Galaxy) as observed by the ALMA radio telescope in Chile.
29 July 2013, 09:53 AM ET
This fascinating space wallpaper shows a simulation of a gas cloud passing close to the supermassive black hole at the center of the galaxy in mid-2013.
26 July 2013, 11:20 AM ET
The sun-approaching Comet ISON floats against a seemingly infinite backdrop of numerous galaxies and a handful of foreground stars in this amazing space wallpaper taken in April 2013 by NASA's Hubble Space Telescope.
25 July 2013, 12:01 PM ET
A snow line has been imaged in a far-off infant planetary system for the very first time as seen in this cool space wallpaper.
24 July 2013, 10:45 AM ET
This rare space wallpaper taken on July 19 by NASA's Cassini spacecraft shows Saturn's rings and our planet Earth and its moon in the same frame.