Mars formed quickly, stunted growth
Posted: Mon, May 30 9:02 AM ET (1302 GMT)
The planet Mars may be a "planetary embryo" that formed quickly but failed to develop into a larger terrestrial planet, scientists recently reported. In a...

Astronauts complete final shuttle spacewalk
Posted: Sat, May 28 10:32 AM ET (1432 GMT)
Two astronauts successfully completed the final planned spacewalk of the space shuttle era on Friday. Mike Fincke and Greg Chamitoff spent seven hours and 24...

Discovery of water in lunar interior may alter models of Moon's formation
Posted: Fri, May 27 7:53 AM ET (1153 GMT)
Scientists have discovered traces of water in rocks from the Moon's interior, a discovery that may force a reexamination of the current leading explanation...

NASA selects asteroid sample return mission
Posted: Thu, May 26 7:20 AM ET (1120 GMT)
NASA announced Wednesday that it will launch a robotic mission in 2016 to fly to a near Earth asteroid and return a sample to Earth....

Astronauts perform third STS-134 spacewalk
Posted: Thu, May 26 7:06 AM ET (1106 GMT)
Two astronauts spent nearly seven hours outside the International Space Station on Wednesday completing a variety of tasks. During a spacewalk that lasted six hours...

NASA ends efforts to contact Spirit rover
Posted: Wed, May 25 7:14 AM ET (1114 GMT)
NASA will end efforts this month to restore communications with the Mars Exploration Rover Spirit, effectively ending a mission that started over seven years ago....

NASA to transition Orion contract to MPCV
Posted: Wed, May 25 6:58 AM ET (1058 GMT)
NASA announced Tuesday that it will transition existing contracts for the Orion crew exploration vehicle to the new Multi-Purpose Crew Vehicle (MPCV) program established...

Soyuz lands in Kazakhstan
Posted: Tue, May 24 7:01 AM ET (1101 GMT)
A Soyuz spacecraft carrying three ISS crewmembers landed safely in Kazakhstan early Tuesday, several hours after performing an unprecedented photographic survey of the station and...

Spacewalkers complete marathon second spacewalk
Posted: Mon, May 23 6:39 AM ET (1039 GMT)
Astronauts spent over eight hours outside the International Space Station on Sunday carrying out several tasks, including dealing with balky covers on a space station...

Endeavour cleared for reentry
Posted: Sun, May 22 8:56 AM ET (1256 GMT)
Shuttle managers announced Saturday they have cleared the shuttle Endeavour for a return to Earth at the end of this month after concluding a damaged...