Cassini data points to subsurface ocean on Enceladus
Posted: Thu, Jun 23 7:08 AM ET (1108 GMT)
Scientists analyzing the composition of plumes ejected from Saturn's moon Enceladus report this week that the likely source of the plumes is an ocean...

Astronaut Mark Kelly to retire
Posted: Wed, Jun 22 7:31 AM ET (1131 GMT)
Mark Kelly, the NASA astronaut who commanded the most recent shuttle mission and is married to congresswoman Gabrielle Giffords, announced on Tuesday his plans to...

Russia launches progress spacecraft
Posted: Wed, Jun 22 7:15 AM ET (1115 GMT)
A Soyuz rocket launches a new cargo spacecraft to the International Space Station on Tuesday. The Soyuz rocket lifted off from Baikonur at 10:38...

ATV undocks from ISS
Posted: Tue, Jun 21 7:34 AM ET (1134 GMT)
A European cargo spacecraft undocked from the International Space Station on Monday after spending nearly four months at the station. The Automated Transfer Vehicle (ATV)...

China launches communications satellite
Posted: Tue, Jun 21 7:25 AM ET (1125 GMT)
A Long March rocket successfully launched a Chinese communications satellite on Tuesday. The Long March 3B rocket lifted off from the Xichang Satellite Launch Center...

MESSENGER reveals new insights about Mercury
Posted: Fri, Jun 17 6:53 AM ET (1053 GMT)
Early analysis of data returned by NASA's MESSENGER spacecraft have provided planetary scientists with new information about the innermost planet. MESSENGER entered orbit around...

Engine problem unlikely to delay Atlantis launch
Posted: Fri, Jun 17 6:34 AM ET (1034 GMT)
A faulty engine valve on the space shuttle Atlantis found earlier this week can be replaced without causing a delay in the planned final shuttle...

Iran launches small satellite
Posted: Thu, Jun 16 8:27 AM ET (1227 GMT)
The Iranian government announced Thursday that it launched a small satellite, the second spacecraft put into orbit by the country. The Safir rocket lifted off...

Scientists forecast lull in solar activity
Posted: Wed, Jun 15 8:20 AM ET (1220 GMT)
The Sun may be entering an extended period of relatively quiet activity, a development that has implications for space exploration and possibly the Earth's...

Lockheed Martin space unit to lay off 1,200
Posted: Wed, Jun 15 8:08 AM ET (1208 GMT)
Lockheed Martin Space Systems announced Tuesday that it will lay off 1,200 of its 16,000 employees by the end of the year. The...