10 May 2013, 01:26 PM ET
This wallpaper shows Dry Tortugas National Park in Florida, which lies almost 70 miles (112.9 km) west of Key West. The park is a cluster of seven islands, composed of coral reefs and sand.
09 May 2013, 11:36 AM ET
The tip of the "wing" of the Small Magellanic Cloud galaxy is dazzling in this space wallpaper from NASA's Great Observatories.
08 May 2013, 12:21 PM ET
This cool space wallpaper is a composite color image of the Herschel PACS 70, 100, 160 micron-wavelength images of Betelgeuse.
07 May 2013, 02:15 PM ET
This beautiful wallpaper shows Theodore Roosevelt National Park in North Dakota. Theodore Roosevelt first came to the badlands on a hunting trip in September 1883.
06 May 2013, 10:10 AM ET
The soft glow in this space wallpaper is NGC 2768, an elliptical galaxy located in the northern constellation of Ursa Major (The Great Bear). It appears here as a bright oval on the sky, surrounded by a wide, fuzzy cloud of material.
03 May 2013, 09:51 AM ET
This space wallpaper reveals Galaxy 2MASX J09442693+0429569 imaged by Hubble. This elliptical galaxy has entered a transitional phase from a young, star-forming galaxy to an older, larger, "red and dead" galaxy.
02 May 2013, 10:37 AM ET
An area covering northern Namibia and southern Angola is pictured in this stunning space wallpaper. Running across this Kompsat-2 satellite image, the Okavango River forms the border between Namibia to the south and Angola to the north.
01 May 2013, 11:37 AM ET
This beautiful space wallpaper reveals a small, sparkling hook in the dark sky known as J082354.96+280621.6, or J082354.96 for short. It is a starburst galaxy, so named because of the incredibly (and unusually) high rate of star formation occurring within
30 April 2013, 01:01 AM ET
This stunning wallpaper shows Mount Rainier National Park in Washington, which is the greatest single-peak glacial system in the United States.
29 April 2013, 12:45 AM ET
This thin, glittering streak of stars seen in this space wallpaper is the spiral galaxy ESO 121-6, which lies in the southern constellation of Pictor (The Painter's Easel).
26 April 2013, 10:33 AM ET
This stunning wallpaper shows Glacier National Park in Montana. The park is full of pristine forests, alpine meadows, rugged mountains, and spectacular lakes.
25 April 2013, 10:07 AM ET
This stunning space wallpaper reveals W3, which is an enormous stellar nursery about 6200 light-years away in the Perseus Arm, one of the Milky Way galaxy’s main spiral arms, that hosts both low- and high-mass star formation.
23 April 2013, 11:40 PM ET
This ghostly space wallpaper shows an object known as HH 151, a bright jet of glowing material trailed by an intricate, orange-hued plume of gas and dust.
22 April 2013, 11:32 PM ET
This beautiful wallpaper shows Shenandoah National Park in Virginia. Gazing across the horizon from the peaks of Shenandoah it’s hard to believe you are just 75 miles from the bustle of our nation’s capital.
21 April 2013, 11:34 PM ET
The object in this fascinating space wallpaper is Jonckheere 900 or J 900, a planetary nebula — glowing shells of ionised gas pushed out by a dying star.
19 April 2013, 08:43 AM ET
This space wallpaper is a mosaic showing part of the Noctis Labyrinthus region, the ‘Labyrinth of the Night’, on Mars. It was composed by Bill Dunford using scenes available in the Mars Express image archive, HRSC view.
18 April 2013, 02:10 AM ET
This wallpaper shows Death Valley National Park in California and Nevada. It is superlative desert of streaming sand dunes, snow-capped mountains, multicolored rock layers, water-fluted canyons and three million acres of stone wilderness.
16 April 2013, 10:35 PM ET
This amazing space wallpaper reveals 30 Doradus, which is the brightest star-forming region in our galactic neighborhood and home to the most massive stars ever seen.
16 April 2013, 12:55 PM ET
This wallpaper shows Carlsbad Caverns National Park in New Mexico. The park contains 113 of caves, which formed when sulfuric acid dissolved the surrounding limestone, creating some of the largest caves in North America.
15 April 2013, 12:47 PM ET
This amazing space wallpaper from ESO’s Very Large Telescope at the Paranal Observatory in Chile shows NGC 1637, a spiral galaxy located about 35 million light-years away in the constellation of Eridanus (The River).
12 April 2013, 02:10 PM ET
This stunning wallpaper shows Voyageurs National Park in Minnesota. Voyageurs is a water-based park where you must leave your car and take to the water to fully experience its lakes, islands and shorelines.
11 April 2013, 10:19 AM ET
This stunning space wallpaper reveals ALMA antennae bathed in red light. Appearing in the background are the southern Milky Way on the left and the Magellanic Clouds at the top. This image was released March 5, 2013.
10 April 2013, 10:23 AM ET
This wallpaper shows Yellowstone National Park, which was established in 1872 making it America's first national park. Located in Wyoming, Montana, and Idaho, it is home to a large variety of wildlife including grizzly bears, wolves, bison, and elk.
09 April 2013, 11:26 AM ET
The NASA/ESA Hubble Space Telescope has captured a new image of Herbig-Haro 110, a geyser of hot gas flowing from a newborn star as seen in this beautiful space wallpaper.
08 April 2013, 12:46 PM ET
The NASA/ESA Hubble Space Telescope has produced an incredibly detailed image of a pair of overlapping galaxies called NGC 3314 as seen in this spectacular space wallpaper.
05 April 2013, 02:04 PM ET
The freshwaters of the Big Cypress Swamp as seen in this wallpaper are essential to the health of the neighboring Everglades and support the rich marine estuaries along Florida’s southwest coast.
04 April 2013, 09:53 AM ET
This space wallpaper shows an aerial view of the Chajnantor Plateau, located at an altitude of 5000 meters in the Chilean Andes, where the array of ALMA antennas is located.
03 April 2013, 10:00 AM ET
This sizzling space wallpaper is an artist’s impression showing exoplanet HD 189733b as it passes in front of its parent star, called HD 189733A.
02 April 2013, 11:06 AM ET
This wallpaper shows Badlands National Park in South Dakota, which contains the world’s richest Oligocene epoch fossil beds.
01 April 2013, 10:16 AM ET
This stunning space wallpaper is an artist’s impression showing an eclipsing binary star system. As the two stars orbit each other they pass in front of one another and their combined brightness, seen from a distance, decreases.
29 March 2013, 10:57 AM ET
This cool space wallpaper is part of a mosaic of images from the Mast Camera (Mastcam) on NASA's Mars rover Curiosity, which shows Mount Sharp in a white-balanced color adjustment.
28 March 2013, 08:58 AM ET
This spectacular wallpaper shows Canaveral National Seashore, which is situated on a barrier island along Florida's east coast. The park has a pristine, undeveloped beach, dunes and a lagoon offering sanctuary to an abundant blend of plants and animals.