12 December 2013, 10:35 AM ET
This beautiful space wallpaper portrays the galaxies NGC 799 (below) and NGC 800 (above) located in the constellation of Cetus (The Whale).
11 December 2013, 11:29 AM ET
Mysteries of Sonoran Desert life are slowly revealed and abundantly displayed at Organ Pipe Cactus National Monument in Arizona as seen in this wallpaper.
10 December 2013, 04:39 PM 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.
09 December 2013, 04:05 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.
06 December 2013, 10:30 AM ET
This beautiful space wallpaper shows the view to the east from Paranal Observatory, seconds after the sun has disappeared behind the horizon.
05 December 2013, 12:26 PM ET
This wallpaper shows Lassen Volcanic National Park in California. The park is home to smoking fumaroles, meadows freckled with wildflowers, clear mountain lakes, and numerous volcanoes.
04 December 2013, 08:57 AM 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.
03 December 2013, 10:55 AM 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.
02 December 2013, 09:38 AM ET
This beautiful wallpaper is an archive image of Lake Clark National Park and Preserve in Alaska.
29 November 2013, 02:02 PM ET
This time-lapse space wallpaper shows Comet ISON approaching and leaving during its slingshot around the sun — represented by the white circle — on Nov. 28, 2013. The ISON images clearly outline the curve of the comet's orbit path.
27 November 2013, 11:11 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).
25 November 2013, 08:58 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.
22 November 2013, 03:03 PM ET
This beautiful wallpaper shows Great Sand Dunes National Park and Preserve in Colorado. Alpine tundra, forests, massive dunes, grasslands, and wetlands are all protected as elements of the Great Sand Dunes natural system.
21 November 2013, 02:05 PM 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).
20 November 2013, 11:25 AM 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.
19 November 2013, 12:12 PM ET
This beautiful wallpaper shows Isle Royale National Park in Michigan. Isle Royale’s physical isolation and primitive wilderness challenged human use for centuries; ironically today it has become the Island’s main attraction.
18 November 2013, 10:06 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.
15 November 2013, 11:34 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.
14 November 2013, 01:05 PM ET
This wallpaper shows Channel Islands National Park in California. The park encompasses five islands and their ocean environment, preserving and protecting a wealth of natural and cultural resources.
13 November 2013, 04:11 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.
12 November 2013, 11:00 AM 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.
11 November 2013, 01:27 PM 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.
08 November 2013, 11:04 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.
07 November 2013, 09:26 AM ET
This stunning wallpaper shows the marine wilderness of Glacier Bay National Park and Preserve in Alaska.
06 November 2013, 08:13 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.
05 November 2013, 08:21 AM ET
Rising from the heart of the Tularosa Basin is one of the world's great natural wonders: the glistening white sands of New Mexico, as seen in this beautiful wallpaper.
04 November 2013, 07:58 AM 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.
01 November 2013, 08:58 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.
31 October 2013, 09:18 AM ET
An extreme of winter on Earth is Antarctica, where the handful of research bases are places of solitude and waiting. The Franco–Italian Concordia outpost, seen here in this cool space wallpaper, is one of these.
30 October 2013, 09:23 AM ET
This wallpaper shows Grand Teton National Park in Wyoming, which preserves a spectacular landscape rich with majestic mountains, pristine lakes and extraordinary wildlife.
29 October 2013, 01:50 PM ET
The ghostly Boomerang Nebula, called the 'coldest place in the universe,' reveals its true shape in this amazing space wallpaper from the giant ALMA radio telescope.
28 October 2013, 12:41 PM ET
A magnetic filament of solar material erupted on the sun in late September, breaking the quiet conditions in a spectacular fashion as seen in this amazing space wallpaper — dubbed a “canyon of fire” by NASA officials.