20 December 2011, 04:35 PM ET
In this space wallpaper, NASA's Kepler mission has discovered the first Earth-size planets orbiting a sun-like star outside our solar system.
20 December 2011, 04:18 PM ET
In this space wallpaper, NASA's Kepler mission discovered the new found planets, called Kepler-20e and Kepler-20f.
15 December 2011, 01:19 PM ET
The bipolar star-forming region, called Sharpless 2-106, or S106 for short, looks like a soaring, celestial snow angel in this cool space wallpaper.
13 December 2011, 11:00 AM ET
This cool space wallpaper reveals an artist's concept shows NASA's Dawn spacecraft orbiting the giant asteroid Vesta. The depiction of Vesta is based on images obtained by Dawn's framing cameras.
12 December 2011, 10:43 AM ET
This composite photo of the total lunar eclipse was taken Dec. 10 by skywatcher Amy Van Artsdalen outside San Francisco in this amazing space wallpaper.
06 December 2011, 10:55 AM ET
This artist's conception space wallpaper illustrates Kepler-22b, a planet known to comfortably circle in the habitable zone of a sun-like star.
16 November 2011, 10:19 AM ET
In this space wallpaper, Tharsis Tholus towers almost 5 miles (8 km) above the surrounding terrain of Mars.
10 November 2011, 12:20 PM ET
In this space wallpaper, a Terminal High Altitude Area Defense (THAAD) interceptor is launched during the system's first operational test at 1:56 a.m. EDT Oct. 5, 2011, at the Pacific Missile Range Facility, Kauai, Hawaii.
08 November 2011, 01:43 PM ET
A glowing laser shines forth from the European Southern Observatory’s Very Large Telescope, creating an artificial star 90 km above the surface of the Earth, a device used to fine-tune the telescope's optics in this cool space wallpaper.
02 November 2011, 07:05 PM ET
This amazing space wallpaper reveals a portion of the Lagoon nebula imaged by Argentinean astronomers Julia Arias and Rodolfo Barbá using the Gemini South telescope with the Gemini Multiple-Object Spectrograph.
28 October 2011, 12:43 PM ET
NPP carries five science instruments, including four new state-of-the-art sensors in this amazing space wallpaper.
26 October 2011, 06:06 PM ET
This cool space wallpaper of an artist's impression shows the distant dwarf planet Eris.
26 October 2011, 12:33 PM ET
Astronaut Ron Garan tweeted this stunning space wallpaper of an auroral glow over the Earth taken by fellow spaceflyer Mike Fossum.
24 October 2011, 10:43 AM ET
The night sky above the 2600-metre-high Cerro Paranal in the Atacama Desert in Chile is dark and clear in this space wallpaper.
19 October 2011, 04:33 PM ET
In this space wallpaper, a United Launch Alliance Atlas V rocket blasts off carrying NASA's Juno mission.
13 October 2011, 12:02 PM ET
NASA's Spitzer Space Telescope exposes the depths of this dusty nebula with its infrared vision, showing stellar infants that are lost behind dark clouds when viewed in visible light in this cool space wallpaper.
03 October 2011, 10:35 AM ET
This cool space wallpaper reveals a view of the Universe that cannot be seen at all by visible-light and infrared telescopes.
27 September 2011, 04:04 PM ET
That's Expedition 28 astronaut Ron Garan in the cupola off the coast of Australia taking his last of more 25,000 pictures from space in this space wallpaper.
21 September 2011, 04:08 PM ET
In this space wallpaper, an artist's concept shows a broken-up asteroid.
14 September 2011, 05:08 PM ET
An artist's concept shows the Orion Multipurpose Crew Vehicle and future destinations for human exploration beyond Earth orbit: the moon, an asteroid and Mars in this stunning space wallpaper.
14 September 2011, 11:54 AM ET
This stunning space wallpaper reveals, an artist concept of SLS on the launchpad.
13 September 2011, 03:28 PM ET
The bright sun, a portion of the International Space Station and Earth's horizon are featured in this space wallpaper photographed during the STS-134 mission's fourth spacewalk in May 2011.
09 September 2011, 12:31 PM ET
The new laser guide star unit of the Allgäu Public Observatory in southwestern Bavaria, Germany, tests a powerful laser beam on August 18, 2011, while lightning also flashes in the background in this amazing space wallpaper.
08 September 2011, 10:44 AM ET
In this space wallpaper, NASA's Cassini spacecraft obtained this unprocessed image of Saturn's moon Helene on June 18, 2011.
31 August 2011, 03:35 PM ET
This space wallpaper of the Earth's crest over the lunar horizon was taken during the Apollo 15 lunar landing mission.
29 August 2011, 11:05 AM ET
On Saturday, August 27, 2011, Ron Garan pointed an HD camera out a window of the International Space Station Cupola for this space wallpaper.
17 August 2011, 03:25 PM ET
In this stunning space wallpaper, two colliding galaxies, in the early stages of their interaction, form a bright exclamation point in space.
10 August 2011, 10:52 AM ET
Planetary nebulae form when some dying stars, having expanded into a red giant phase, expel a shell of gas as they evolve into white dwarfs as seen in the stunning space wallpaper.
04 August 2011, 04:02 PM ET
This cool space wallpaper reveals, an image combining orbital imagery with 3-D modeling shows flows that appear in spring and summer on a slope inside Mars' Newton crater.
03 August 2011, 05:22 PM ET
On Sunday, July 31, 2011, when Expedition 28 astronaut Ron Garan aboard the International Space Station looked out his window, this is what he saw: the moon in this space wallpaper.
01 August 2011, 12:37 PM ET
Dawn entered orbit around Vesta on July 15, and will spend a year orbiting the body revealed in this stunning space wallpaper.
29 July 2011, 11:25 AM ET
Astronomers think that each of Epsilon Eridani's asteroid belts could have a planet orbiting just outside it, shepherding its rocky debris into a ring in the same way that Jupiter helps keep our asteroid belt confined in this space wallpaper.