25 January 2011, 09:40 AM ET
An overview of the space shuttle Challenger accident as we look back on the tragedy that occurred 25 years ago this week.
24 January 2011, 01:59 PM ET
A Japanese unmanned cargo spaceship is closing in on the International Space Station, where it plans to arrive Jan. 27.
24 January 2011, 09:40 AM ET
NASA will remember the anniversaries of three major tragedies this week.
21 January 2011, 11:13 AM ET
Japan is poised to launch its second-ever unmanned cargo vessel to the International Space Station Jan. 22.
21 January 2011, 11:07 AM ET
An extra space shuttle launch will lift off this summer, if NASA can find the money.
21 January 2011, 10:35 AM ET
Recent events have put a spotlight on the physical challenges of working outside in space.
19 January 2011, 02:13 PM ET
NASA has assigned a veteran spacewalker to replace injured astronaut Tim Kopra on the crew of the space shuttle Discovery, with just over five weeks remaining before the mission's Feb. 24 launch.
19 January 2011, 12:07 PM ET
Space Launch Complex 6 at Vandenberg Air Force Base has seen many liftoffs.
17 January 2011, 04:24 PM ET
U.S. Sen. Bill Nelson hosted a 25th reunion of the Columbia shuttle crew he joined during a weekend of celebrating their giddy success while also somberly reflecting on the dangers of human spaceflight.
17 January 2011, 12:28 PM ET
Astronaut Tim Kopra is scheduled to fly on shuttle Discovery Feb. 24
15 January 2011, 08:47 AM ET
After 10 years with NASA, astronaut Jose Hernandez is leaving the space agency for a job in the private sector.
14 January 2011, 02:50 PM ET
The most recent shuttle delays suggest an extra shuttle flight on the table may be threatened.
13 January 2011, 04:32 PM ET
NASA has named a backup space shuttle commander for astronaut Mark Kelly, husband of Rep. Gabrielle Giffords who was shot on Jan. 8.
13 January 2011, 01:03 PM ET
A veteran space shuttle commander and record-holding spacewalker are the newest inductees for the Astronaut Hall of Fame.
12 January 2011, 05:01 PM ET
NASA is hoping to launch the space shuttle Discovery on its final voyage no earlier than Feb. 24, after months of delays due to cracked fuel tank supports.
10 January 2011, 04:19 PM ET
Here's how to get the best view of NASA's final space shuttle launches.
07 January 2011, 09:51 AM ET
NASA has delayed the space shuttle Discovery's launch yet again to allow more fuel tank repairs.
05 January 2011, 01:51 PM ET
NASA has begun reinforcing support beams on the external fuel tank of the space shuttle Discovery after extensive X-ray imaging last week revealed new cracks in some of the structural supports.
05 January 2011, 11:16 AM ET
04 January 2011, 04:16 PM ET
In exchange for buying Boeing jets, Turkey wanted a Turkish astronaut to fly on a NASA space shuttle, according to a classified state department message recently released by Wikileaks.
03 January 2011, 05:22 PM ET
An American auction house is putting a bounty of space artifacts and memorabilia up for grabs to high bidders looking to get their hands on a piece of the final frontier.
31 December 2010, 07:59 AM ET
While 2010 saw many historic successes in spaceflight and space science, plenty of things went wrong this year, too.
30 December 2010, 04:45 PM ET
NASA technicians have wrapped up a series of X-ray image scans on the space shuttle Discovery's external fuel tank, but several new cracks were detected on three of the beleaguered tank's support beams, agency officials said.
30 December 2010, 10:46 AM ET
NASA is considering a plan to merge its space operations and human spaceflight mission directorates to better align its manned spaceflight goals.
28 December 2010, 07:13 AM ET
Canadian engineers put the International Space Station's Dextre robot through a workout last week, showing that the handyman is ready for duty when a Japanese cargo freighter arrives at the orbiting lab in January.
24 December 2010, 01:11 PM ET
NASA has invited Santa Claus to drop by Kennedy Space Center this Christmas Eve to check out the agency's three space shuttles as they're prepared for their final missions.
22 December 2010, 05:24 AM ET
Leaving the launch pad and rolling back to the Vehicle Assembly Building overnight, the space shuttle Discovery will spend the holidays having the external tank X-rayed as engineers look into the theory that its cracks resulted from stresses accumulated d
17 December 2010, 12:17 PM ET
NASA pumped millions of gallons of super-cold propellants into space shuttle Discovery's external fuel tank Friday morning to test why it had developed cracks along two support beams during a launch attempt last month.
16 December 2010, 03:30 PM ET
To test a troublesome fuel tank on the space shuttle Discovery, NASA plans to fill the tank Friday morning and run a countdown to what would normally be its last few seconds before liftoff.
16 December 2010, 11:37 AM ET
Plans are moving forward for the display of two of NASA's soon-to-be-retired space shuttles at the Smithsonian and Florida's Kennedy Space Center.
03 December 2010, 04:58 PM ET
NASA is offering used space shuttle heat shield tiles to schools and universities to communicate science to students.
03 December 2010, 04:35 PM ET
NASA is holding a "baked-goods" sale for schools, but instead of tasty desserts, the space agency is offering something much hotter: space shuttle heat shield tiles.
03 December 2010, 12:29 PM ET
NASA has delayed the final launch of space shuttle Discovery to no earlier than Feb. 3.
02 December 2010, 06:44 PM ET
NASA officials have not set a firm launch date for the final flight of the space shuttle Discovery, after deciding that more time is needed to collect additional data on the cause of the technical issues that have grounded the orbiter for over a month.
02 December 2010, 08:14 AM ET
NASA officials are set to meet this morning (Dec. 2) to evaluate whether the space shuttle Discovery is ready for its final launch later this month, or whether engineering teams need more time to assess repairs that were made to the orbiter following its
30 November 2010, 02:56 PM ET
As NASA officials continue to analyze data on the technical issues that have temporarily grounded the space shuttle Discovery, the agency is closely evaluating their available launch options as this year draws to a close.