27 December 2011, 04:35 PM ET
Up to 30 pieces of the 14-ton Phobos-Grunt Mars probe could reach the ground.
27 December 2011, 12:00 PM ET
The 50th anniversary of human spaceflight brought big changes.
23 December 2011, 07:00 AM ET
The images were snapped by NASA's SOFIA airborne observatory.
16 December 2011, 04:59 PM ET
The new spending bill would cut another $325 million from NASA's budget.
14 December 2011, 02:25 PM ET
The Phobos-Grunt spacecraft has been stranded in the wrong orbit since Nov. 8.
11 December 2011, 10:42 PM ET
Using his south sky video camera, amateur astronomer John Chumack captured Geminids streaking across the Winter Triangle and Orion on December 9th 2011. The best nights to watch for the shower are December 13th through the 15th.
06 December 2011, 05:01 PM ET
Pieces of the Phobos-Grunt have reported already fallen to Earth.
02 December 2011, 05:21 PM ET
The J-2X engine will power the second stage of NASA's new heavy-lifter.
02 December 2011, 04:53 PM ET
The 3D video allows viewers to fly over the asteroid Vesta's ridged surface.
02 December 2011, 04:39 PM ET
Efforts to contact the Russian Phobos-Grunt spacecraft have failed.
02 December 2011, 01:16 PM ET
The J-2X rocket engine (the new upper stage rocket engine slated for the NASA's Space Launch Systems heavy-lift rocket) was the subject of a combustion stability test on December 1, 2011. A successful firing was completed.
02 December 2011, 12:40 PM ET
The Mars Science Laboratory is on track and there's no need to adjust its trajectory at this time.
30 November 2011, 11:16 AM ET
The troubled Phobos-Grunt spacecraft remains in a low-altitude orbit above Earth.
29 November 2011, 03:27 PM ET
An up-close look at the space agency's new $500 million, 355-foot-high mobile launcher.
26 November 2011, 10:05 AM ET
NASA's Mars Science Laboratory, or Curiosity rover, launched to the Red Planet on Nov. 26, 2011.
26 November 2011, 09:55 AM ET
NASA has an ambitious plan for future Mars exploration, including one day sending humans to the Red Planet.
23 November 2011, 11:53 AM ET
NASA is expecting 13,500 people to view the launch of Mars Science Laboratory on Saturday.
20 November 2011, 08:53 AM ET
The Mars Science Laboratory rover Curiosity will now launch Saturday, Nov. 26.
18 November 2011, 02:58 PM ET
NASA's new heavy-lift rocket, the Space Launch System, will arrive on a mobile launcher weighing 6.75 million-pounds, standing 400 feet tall. Time-lapse video shows the tower's trip to its home at Kennedy Space Center's Launchpad 39B.
18 November 2011, 02:42 PM ET
A timeline of every mission sent to Mars so far.
18 November 2011, 02:37 PM ET
See the latest news, photos, videos and multimedia for NASA's Mars Science Laboratory Curiosity mission.
17 November 2011, 03:48 PM ET
NASA administrator Charles Bolden assured lawmakers that the agency is on track with its future goals.
15 November 2011, 02:53 PM ET
The space agency has opened applications for its 21st astronaut class.
10 November 2011, 02:15 PM ET
NASA's Space Launch Systems upper stage J-2X rocket engine was successfully test fired for 500 seconds on November 9th, 2011.
09 November 2011, 04:26 PM ET
The agency fired the J-2X engine for more than 8 minutes.
09 November 2011, 02:45 PM ET
NASA will conduct its first test flight of its Orion Spacecraft - named Exploration Flight Test-1 (EFT-1) in 2014. The capsule will be launched to an altitude higher than any human-rated spacecraft has reached since 1973.
08 November 2011, 11:22 AM ET
The six Mars500 crew members completed their 520-day mock mission on Nov. 4.
06 November 2011, 01:51 AM ET
Orion is one of the most recognizable constellations in the sky for its likeness to a hunter with a bow and arrow.
04 November 2011, 06:01 AM ET
After a simulated 520-day journey to Mars, six volunteer astronauts have emerged from isolation.
03 November 2011, 04:01 PM ET
Houston, we have a space president.
02 November 2011, 03:10 PM ET
NASA will recycle launch equipment for its new heavy-lift rocket.
31 October 2011, 12:51 PM ET
The crew of the Mars500 project is set to "return" home this week.
27 October 2011, 03:07 PM ET
How to fly a human mission to a Near Earth Asteroid. This video was created before NASA'S Constellation program was cancelled. But it could be flown with new generation private or government vehicles.
27 October 2011, 02:00 PM ET
See amazing views of asteroid 21 Lutetia from the July 2010 flyby of Europe's Rosetta probe.
27 October 2011, 02:00 PM ET
Asteroid Lutetia is the first space rock thought to have a hot, molten metal core, scientists say.
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.