21 March 2012, 02:34 PM ET
NASA administrator Charles Bolden fielded tough questions during a hearing on Capitol Hill today.
20 March 2012, 10:00 AM ET
NASA officials hope the Curiosity rover helps convince lawmakers to fund planetary science more generously.
27 February 2012, 05:54 PM ET
NASA is starting the planning process for its scaled-back robotic Mars exploration program.
21 February 2012, 05:52 PM ET
The space agency will have to cut back on ambitious missions to Mars and other planets.
15 February 2012, 07:00 AM ET
There's no room for multibillion-dollar exploration efforts in the current NASA budget.
14 February 2012, 07:00 AM ET
Big-ticket "flagship" missions to the Red Planet are off the table, for now.
13 February 2012, 03:09 PM ET
Money to explore new technology, but not that much for science: an overview of the Agency's annual ammunition.
10 February 2012, 07:00 AM ET
The spacecraft once again has the Red Planet in its sights.
09 February 2012, 07:02 PM ET
Funding cuts will probably force NASA to withdraw from the European-led ExoMars missions.
30 January 2012, 12:47 PM ET
The Radiation Assessment Detector (RAD) aboard the Curiosity rover is collecting data while en route to the Mars. This will give important information of the effects of radiation from events such as solar storms on spacecraft and their contents
27 January 2012, 02:09 PM ET
The two launch vehicles are apparently undamaged.
24 January 2012, 07:00 AM ET
Opportunity landed on the Red Planet eight years ago, and it's still doing science work.
11 January 2012, 11:12 PM ET
NASA's Mars Science Laboratory Curiosity is on track for an August landing.
10 January 2012, 07:00 AM ET
The Curiosity rover will perform a series of trajectory-correction burns.
03 January 2012, 11:59 AM ET
Spirit and Opportunity have made ground-breaking discoveries on the Red Planet.
21 December 2011, 05:24 PM ET
Flying in space is tough work, and these missions found out the hard way.
21 December 2011, 10:31 AM ET
A look at the most memorable events in spaceflight from 2011.
21 December 2011, 07:00 AM ET
A lot of spacecraft went up this year, and a few came crashing back down.
19 December 2011, 03:36 PM ET
Relive 11 amazing unmanned rocket launches of the year by American launch provider United Launch Alliance.
16 December 2011, 04:52 PM ET
End of a Shuttle era, on-orbit & launch failures, space station completion, and private space growth highlight an exciting year in spaceflight.
16 December 2011, 07:00 AM ET
Curiosity is measuring space radiation during its long flight to the Red Planet.
06 December 2011, 01:01 PM ET
Curiosity's Sample Analysis at Mars (SAM) instrument will analyze organic material.
03 December 2011, 03:02 AM ET
From the launch of the Curiosity rover to a tour of Spaceport America and more, it was a busy week in space.
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.
28 November 2011, 02:54 PM ET
A behind-the-scenes look at Curiosity's liftoff and the hoopla surrounding it.
26 November 2011, 03:19 PM ET
The launch of the car-size Curiosity rover was just the beginning.
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, 10:03 AM ET
The car-size Curiosity rover has begun its 8 1/2-month journey to Mars.
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.
26 November 2011, 09:46 AM ET
The Mars Science Laboratory aka Curiosity was launched from the Kennedy Space Center on November 26, 2011. The 2000 pound rover is scheduled to land on Mars in August 2012.
25 November 2011, 05:56 PM ET
The car-size Curiosity rover is ready to begin its long journey to Mars.
25 November 2011, 05:18 PM ET
Clara Ma, now a ninth-grader, says she's always been interested in space exploration.
25 November 2011, 07:00 AM ET
The three rovers that have already explored Mars have left Curiosity with big tracks to fill.
23 November 2011, 03:07 PM ET
Everything looks good for Curiosity's blastoff, officials say.
23 November 2011, 01:17 PM ET
Curiosity may make it all the way to the top of Gale Crater's huge sediment mound.
23 November 2011, 11:57 AM ET
NASA says that there is little danger from radiation from the launch.