29 December 2011, 02:31 PM ET
See the latest news about NASA's Grail moon gravity mission.
11 October 2011, 12:14 PM ET
Each day we highlight a spectacular picture from space. See space exploration photos, astronaut pictures and more in our Image of the Day galleries.
07 October 2011, 02:47 PM ET
The planet Uranus is the seventh planet from the sun and the third largest planet in the solar system. Uranus is a gas giant with the coldest atmosphere in the solar system.
02 September 2011, 06:43 AM ET
See the latest news on Nibiru and 2012.
21 July 2011, 06:18 AM ET
See the latest updates on NASA's last shuttle mission in history, the STS-135 flight of Atlantis.
22 April 2011, 11:19 AM ET
Space shuttle Endeavour ends its career with the 14-day mission of STS-134.
19 April 2011, 05:29 PM ET
The solar system's runt.
19 April 2011, 05:18 PM ET
The eighth planet is an ice giant.
19 April 2011, 01:02 PM ET
The gas giant is the third-largest planet.
23 March 2011, 05:57 PM ET
Learn the latest discoveries about the ringed planet Saturn.
23 March 2011, 05:38 PM ET
Learn the latest discoveries about Jupiter and its many moons and rings.
23 March 2011, 04:59 PM ET
Learn the latest discoveries about Venus.
23 March 2011, 04:29 PM ET
Learn the latest about Mercury, our solar system's smallest planet.
23 March 2011, 03:49 PM ET
Mars is the fourth planet from the sun. See the latest discoveries on the Red Planet.
23 March 2011, 01:02 PM ET
Relive the final voyage of NASA's space shuttle Discovery during the STS-133 mission.