17 January 2014, 09:50 AM ET
The process of selecting a site for NASA's next landing on Mars, planned for September 2016, has narrowed to four semifinalist sites located close together in the Elysium Planitia region of Mars, as seen in this space wallpaper.
16 January 2014, 09:14 AM ET
This wallpaper shows Little Bighorn Battlefield National Monument in Montana—an area that memorializes one of the last armed efforts of the Northern Plains Indians to preserve their way of life.
15 January 2014, 02:43 PM ET
Massive stars can wreak havoc on their surroundings, as can be seen in this beautiful space wallpaper of the Carina nebula from NASA's Spitzer Space Telescope.
14 January 2014, 01:07 PM ET
Prominent patches of wind-blown dust, possibly mixed with volcanic ash, radiate from Becquerel crater and into a neighboring crater, as seen in this spectacular space wallpaper.
13 January 2014, 01:11 AM ET
This cool space wallpaper shows an optical color image of galaxies overlaid with X-ray data (magenta) from NASA's Nuclear Spectroscopic Telescope Array (NuSTAR).
10 January 2014, 11:02 AM ET
This beautiful wallpaper shows Sleeping Bear Dunes National Lakeshore in Michigan.
09 January 2014, 11:34 AM ET
This space wallpaper shows a set of images from NASA's Cassini mission that reveal the turbulent power of a monster Saturn storm.
08 January 2014, 09:54 AM ET
This beautiful space wallpaper taken with the NASA/ESA Hubble Space Telescope shows an example of a bipolar planetary nebula. This object, which is known as Hubble 12 and also catalogued as PN G111.8-02.8, lies in the constellation of Cassiopeia.
07 January 2014, 09:53 AM 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.
06 January 2014, 04:44 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.
03 January 2014, 09:18 AM ET
This wallpaper shows Badlands National Park in South Dakota, which contains the world’s richest Oligocene epoch fossil beds, dating 37-28 million years old. Ancient mammals such as the rhino, horse, and saber-toothed cat once roamed here.
02 January 2014, 09:34 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.
31 December 2013, 04:30 PM 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.
29 December 2013, 01:26 PM ET
This wallpaper shows Hawai‘i Volcanoes National Park. The park displays the results of 70 million years of volcanism, migration, and evolution and a distinct human culture.
27 December 2013, 04:15 PM ET
The spectacular swirling arms and central bar of the Sculptor galaxy are revealed in this space wallpaper from NASA's Spitzer Space Telescope.
23 December 2013, 02:25 PM 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.
20 December 2013, 01:40 PM 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.
19 December 2013, 04:18 PM 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.
18 December 2013, 09:53 AM ET
A piercingly bright curtain of stars is the backdrop for this beautiful space wallpaper taken by astronomer Håkon Dahle.
17 December 2013, 10:54 AM ET
This wallpaper shows Everglades National Park in Florida. It is the largest subtropical wilderness in the United States and boasts rare and endangered species.
16 December 2013, 08:59 AM ET
This space wallpaper is a color-coded topography map from NASA's Dawn mission, which shows the giant asteroid Vesta.
13 December 2013, 01:47 PM ET
This wallpaper shows Gulf Islands National Seashore of Florida and Mississippi. Stunning beaches, historic ruins, wildlife sanctuaries and remote islands make up this wonderful park.
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.