29 August 2013, 09:53 AM ET
This wallpaper shows Alibates Flint Quarries National Monument in Texas. The monument protects a mesa covered in a lithic scatter carpet of flint, so thick you cannot walk without stepping on human generated flakes of Alibates flint.
28 August 2013, 08:59 AM ET
The face-on spiral galaxy M101, or the Pinwheel Galaxy, is seen at ultraviolet and optical wavelengths in this amazing space wallpaper taken by ESA’s XMM-Newton space telescope. This image was released June 10, 2013.
27 August 2013, 10:49 AM ET
This beautiful wallpaper shows Muir Woods National Monument in California. The virgin stand of coastal redwoods was named for John Muir, writer and conservationists.
26 August 2013, 09:00 AM ET
This beautiful space wallpaper is a mosaic of Kasei Valles, comprising 67 images taken with the High Resolution Stereo Camera on ESA’s Mars Express. This image was released June 6, 2013.
23 August 2013, 09:35 AM ET
This stunning space wallpaper is a combination of two composite images of NGC 6210.
22 August 2013, 09:57 AM ET
This wallpaper shows Amistad National Recreation Area in Texas, which is the United States portion of International Amistad Reservoir, formed on the Rio Grande along the border of the U.S. and Mexico.
21 August 2013, 09:48 AM ET
This space wallpaper is an artist’s impression showing a dust trap in the system Oph-IRS 48. The dust trap provides a safe haven for the tiny rocks in the disc, allowing them to clump together and grow to sizes that allow them to survive on their own.
20 August 2013, 03:45 PM ET
This wallpaper shows Johnstown Flood National Memorial in Pennsylvania. The South Fork dam failed on Friday, May 31, 1889 and unleashed 20,000,000 tons of water that devastated Johnstown, Pa.
19 August 2013, 09:15 AM ET
This spectacular space wallpaper from the Wide Field Imager on the MPG/ESO 2.2-metre telescope at the La Silla Observatory in Chile shows the globular star cluster NGC 6752 in the southern constellation of Pavo (The Peacock).
16 August 2013, 09:31 AM ET
This space wallpaper from ESO's Very Large Telescope (VLT) shows the newly discovered planet HD95086 b, next to its parent star.
15 August 2013, 09:14 AM ET
This wallpaper shows Russell Cave National Monument in Alabama. For more than 10,000 years, Russell Cave was home to prehistoric peoples. Russell Cave provides clues to the daily living of early North American inhabitants dating from 6500 B.C. to 1650 A.D
14 August 2013, 09:00 AM ET
This space wallpaper shows the north polar ice cap of Mars, presented as a mosaic of 57 separate images from the High Resolution Stereo Camera on ESA’s Mars Express.
13 August 2013, 11:13 AM ET
This wallpaper shows Scotts Bluff National Monument in Nebraska. Scotts Bluff has been a natural landmark for many peoples, and it served as the path marker for those on the Oregon, California, Mormon, and Pony Express Trails.
12 August 2013, 10:36 AM ET
Unlike the venomous fictional plants that share its name, the Trifid of the North as seen in this space wallpaper, poses no threat to your vision.
09 August 2013, 10:28 AM ET
This spectacular space wallpaper shows northwestern Crete, the largest and most populous of the Greek islands. It is a compilation of three radar images from Japan’s ALOS satellite. Image released March 13, 2013.
08 August 2013, 01:02 PM ET
This beautiful wallpaper shows Sunset Crater National Monument in Arizona. Sunset Crater Volcano was born in a series of eruptions sometime between 1040 and 1100.
07 August 2013, 09:35 AM 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.
06 August 2013, 02:45 PM ET
This wallpaper shows Timpanogos Cave National Monument in Utah. Timpanogos Cave is known for its high concentration of helictites — a spiraling cave formation that seems to defy gravity.
05 August 2013, 09:42 AM ET
This new space wallpaper from the NASA/ESA Hubble Space Telescope captures an ongoing cosmic collision between two galaxies a spiral galaxy is in the process of colliding with a lenticular galaxy.
02 August 2013, 09:19 AM ET
This stunning space wallpaper shows the dramatic shape and color of the Ring Nebula, otherwise known as Messier 57. New observations show that the nebula is shaped like a distorted doughnut.
01 August 2013, 03:18 PM ET
This beautiful wallpaper shows Saint Croix National Scenic Riverway in Minnesota and Wisconsin. The St. Croix and Namekagon Rivers offer 252 miles (405 km) of clean water gliding past a lush green landscape, with glimpses of a human presence.
31 July 2013, 01:35 PM ET
This intriguing space wallpaper reveals the spectacular stellar nursery IC 2944. The image was released on May 23, 2013 to celebrate a milestone: 15 years of ESO’s Very Large Telescope.
30 July 2013, 10:39 AM ET
This wallpaper shows Wupatki National Monument in Arizona. Less than 800 years ago, Wupatki Pueblo was the largest pueblo around. It flourished for a time as a meeting place of different cultures.
29 July 2013, 09:34 AM ET
An onionskin-like structure of concentric dust shells surround a central, aging star as seen in this cool space wallpaper.
26 July 2013, 10:13 AM ET
This space wallpaper shows the ray pattern of dust that was ejected from the crater over a billion years ago, when an asteroid larger than a mile (1.6 km) across slammed into the Moon.
25 July 2013, 03:07 PM ET
This wallpaper shows Yellowstone National Park, which spans the states Wyoming, Montana and Idaho.
24 July 2013, 09:40 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.
23 July 2013, 12:16 PM ET
This beautiful wallpaper shows Yosemite National Park in California.
22 July 2013, 09:13 AM ET
This stunning space wallpaper is a Landsat image of the Clearwater Lakes in Canada’s Quebec province. Located to the east of the Hudson Bay, what appears to be two separate lakes is actually a single body of water that fills two depressions.
19 July 2013, 02:43 PM ET
This image shows Utah's first national park, Zion National Park. Visitors can follow the paths where ancient native people and pioneers walked and gaze up at massive sandstone cliffs of cream, pink, and red that soar into a brilliant blue sky.
18 July 2013, 11:59 AM ET
This space wallpaper of the nebula NGC 3603 shows globules of gas and dust; giant, gaseous pillars; young stars surrounded by debris disks; aging, massive stars; and a blue supergiant star—all various stages in star life.
17 July 2013, 09:55 AM ET
Strands of sun, soil, and air are woven into a beautifully connected patchwork of plants and animals, as seen in this cool wallpaper taken from Big Thicket National Preserve in Texas.