15 December 2010, 04:48 PM ET
Andromeda galaxy, our nearest spiral galaxy neighbor.
15 December 2010, 04:45 PM ET
This artist's conception shows a star with a dusty disk encircling it, yet to coalesce into planets.
15 December 2010, 04:33 PM ET
The gas giant planet in its entirety.
14 December 2010, 05:52 PM ET
Mars seen in its entirety.
14 December 2010, 05:47 PM ET
Shadowed craters stand out in relief on the moon.
14 December 2010, 05:45 PM ET
Gas clouds in the constellation Orion.
14 December 2010, 05:39 PM ET
Space shuttle Endeavor soars above Earth.
14 December 2010, 05:35 PM ET
Earth and moon images together in one wallpaper
14 December 2010, 05:19 PM ET
The Earth hangs in the blackness of space.
14 December 2010, 05:16 PM ET
A global view of Venus.
14 December 2010, 03:56 PM ET
A stunning view of a spiral galaxy in deep space.
14 December 2010, 03:49 PM ET
The Jet Propulsion Lab likes to use this image as their background.
21 October 2010, 01:24 PM ET
On April 28, 2010, Cassini flew by Saturn's moon, Enceladus, as pictured in an artist's conception.
21 October 2010, 01:20 PM ET
Atlantis hanging onto the ISS in May 2010.
21 October 2010, 01:18 PM ET
This artist's conception depicts a watery alien planet beyond a belt of asteroids circling a distant star.
21 October 2010, 01:17 PM ET
Discovery docked to the ISS with Leonardo in the payload bay.
21 October 2010, 01:02 PM ET
The International Space Station's new cupola provides dramatic views of Earth.
21 October 2010, 01:00 PM ET
Astronaut Robert L. Satcher Jr., photographs his helmet visor outside the International Space Station in November 2009.
21 October 2010, 12:58 PM ET
A spiral galaxy gains a purplish hue in the false-color view from a space telescope.
21 October 2010, 12:49 PM ET
The Earth as seen by Apollo 17 astronauts.
20 October 2010, 04:46 PM ET
Astronaut Nicholas Patrick works on the new cupola outside the International Space Station.