24 May 2011, 01:30 PM ET
NASA has revealed details of the spaceship that will take astronauts to an asteroid and then on to Mars.
24 May 2011, 01:18 PM ET
See photos of NASA's Multi-Purpose Crew Vehicle concept developed from the Orion Crew Exploration Vehicle.
24 May 2011, 11:50 AM ET
NASA is set to make a big announcement today (May 24) about its plans for the human exploration of deep space.
23 May 2011, 12:30 AM ET
Endeavour astronauts Mark Kelly and Mike Fincke spoke to Tucson elementary school students Sunday.
21 May 2011, 04:20 PM ET
NASA on Saturday cleared the shuttle Endeavour's heat shield of any concerns after one last check of a gouge on its belly.
21 May 2011, 06:43 AM ET
Astronauts on shuttle Endeavour took a closer look at their shuttle's heat shield Saturday to inspect a gouge.
20 May 2011, 04:07 PM ET
Endeavour astronauts will take another look at a small belly tile ding to make sure it poses no threat to the shuttle.
20 May 2011, 01:08 PM ET
The targeted launch date for the final mission of NASA's space shuttle program – Atlantis' STS-135 flight – has been set for July 8.
20 May 2011, 09:06 AM ET
Two spacewalkers completed the first of four spacewalks for the shuttle Endeavour's mission.
19 May 2011, 05:00 PM ET
Today more than 500 scientists breathed a sigh of relief to see their prized experiment safely installed on the International Space Station.
19 May 2011, 05:00 PM ET
NASA will ask Endeavour astronauts to conduct an extra inspection of damaged tiles on their shuttle's heat shield.
19 May 2011, 03:18 PM ET
Two spacewalkers will swap out science experiment materials outside the space station.
19 May 2011, 08:39 AM ET
Astronaut Mark Kelly received updates about his wife's surgery while working on the International Space Station.
19 May 2011, 05:49 AM ET
Endeavour astronauts attached the station's new Alpha Magnetic Spectrometer to hunt for invisible cosmic rays.
18 May 2011, 05:05 PM ET
Space shuttle astronauts will attach the $2 billion Alpha Magnetic Spectrometer to the outside of the station.
18 May 2011, 01:31 PM ET
Kelly has thorough training focusing on the mission at hand despite events in his personal life.
18 May 2011, 06:14 AM ET
The space shuttle Endeavour arrived for one last visit to the International Space Station this morning.
18 May 2011, 05:08 AM ET
Two NASA astronauts aboard the shuttle Endeavour have challenged the citizens of Earth to an otherworldly game of chess.
18 May 2011, 03:20 AM ET
It still hasn't sunk in that Endeavour will never launch again.
17 May 2011, 03:38 PM ET
Learn how to spot the space shuttle Endeavour and International Space Station in the night sky.
17 May 2011, 11:30 AM ET
Atlantis made a slow roll from its processing facility to the giant Vertical Assembly Building where it will be assembled for launch.
17 May 2011, 09:11 AM ET
Space shuttle Endeavour launched on its final mission, STS-134, May 16, 2011, from Kennedy Space Center at Cape Canaveral, Fla.
17 May 2011, 05:03 AM ET
Stefanie Gordon nearly slept through Endeavour's launch during an airplane ride, but her iPhone caught the view.
17 May 2011, 04:13 AM ET
Endeavour's astronaut crew will perform an extensive survey of the shuttle's heat shield to look for any damage from the launch.
16 May 2011, 11:51 PM ET
NASA's shuttle Endeavour is chasing the International Space Station and due to dock Wednesday.
16 May 2011, 04:38 PM ET
A high-altitude balloon equipped with a camera captured unique views of Endeavour's final launch into space.
16 May 2011, 12:52 PM ET
For now, NASA workers must focus on the mission at hand before giving in to emotion over Endeavour's last liftoff.
16 May 2011, 10:00 AM ET
Among the roughly 500,000 spectators watching this morning's liftoff of the space shuttle Endeavour was one especially high-profile guest.
16 May 2011, 08:56 AM ET
Endeavour is ferrying six astronauts and an expensive astrophysics experiment to the International Space Station.
16 May 2011, 08:50 AM ET
The husband of a Congresswoman, an Italian Air Force colonel, and a geologist are slated to launch aboard the shuttle this week.
15 May 2011, 11:28 PM ET
NASA has begun fueling the shuttle Endeavour for its planned May 16 launch at 8:56 a.m. EDT (1256 GMT).
15 May 2011, 06:00 AM ET
NASA will try a second time to launch the shuttle Endeavour on Monday (May 16) at 8:56 a.m. EDT.
14 May 2011, 03:59 PM ET
NASA cleared the Endeavour orbiter for a planned Monday launch to begin the next-to-last space shuttle mission.
14 May 2011, 09:01 AM ET
The six veteran astronauts struck a pose to appear as if they were in J.J. Abrams' 2009 movie.
14 May 2011, 06:00 AM ET
Engineers who helped construct Endeavour reminisce about what it was like to be a part of the space shuttle program.
14 May 2011, 06:00 AM ET
SPACE.com takes a trip down memory lane with Daniel Brandenstein, shuttle Endeavour's first commander.