Reaction wheel fails on Kepler, putting mission's future in question
Posted: Thu, May 16 7:50 AM ET (1150 GMT)
A second reaction wheel on NASA's Kepler spacecraft has failed, forcing agency officials to consider alternative missions for the exoplanet-hunting spacecraft. NASA reported...

Atlas launches GPS satellite
Posted: Thu, May 16 7:37 AM ET (1137 GMT)
For the first time, an Atlas 5 rocket launched a GPS navigation satellite from Florida on Wednesday afternoon. the Atlas 5 401 lifted off from...

Proton launches Eutelsat communications satellite
Posted: Wed, May 15 6:47 AM ET (1047 GMT)
A Russian Proton rocket successfully launched a communications satellite for European operator Eutelsat on Tuesday. The Proton M lifted off from the Baikonur Cosmodrome in...

Astronomers use new method to discover exoplanet
Posted: Wed, May 15 6:32 AM ET (1032 GMT)
Astronomers reported this week the discovery of an extrasolar planet using a new approach that makes use in part of the theory of relativity. The...

ISS crewmembers return to Earth
Posted: Tue, May 14 7:09 AM ET (1109 GMT)
American, Canadian, and Russian crewmembers returned to Earth from the International Space Station Monday night, landing safely in Kazakhstan. The Soyuz TMA-07M spacecraft carrying...

Spacewalkers replace ISS coolant pump to resolve leak
Posted: Sun, May 12 9:49 AM ET (1349 GMT)
Two NASA astronauts performed an unscheduled spacewalk on Saturday, replacing a coolant pump on the station's truss that appeared to be the source of...

Intelsat orders four Boeing satellites
Posted: Sun, May 12 9:31 AM ET (1331 GMT)
Satellite operator Intelsat has ordered four more satellites from Boeing, the company announced this week. Intelsat will purchase four 702MP spacecraft from Boeing, starting with...

Spacewalking astronauts to attempt to repair ISS coolant leak
Posted: Sat, May 11 9:29 AM ET (1329 GMT)
NASA approved plans late Friday to have two astronauts perform an emergency spacewalk Saturday to investigate and attempt to repair a leak in the station'...

RADARSAT-1 declared lost
Posted: Sat, May 11 9:12 AM ET (1312 GMT)
A Canadian radar imaging satellite that malfunctioned over a month ago has been declared lost, the Canadian Space Agency announced this week. RADARSAT-1 suffered...

ISS suffers coolant leak
Posted: Fri, May 10 8:10 AM ET (1210 GMT)
Astronauts on the International Space Station spotted a leak of ammonia from the station's cooling system on Thursday, a problem that may ultimately require...