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...

Water on Earth and in Moon may come from same source
Posted: Fri, May 10 7:56 AM ET (1156 GMT)
Water in the Moon's interior has the same isotopic ratios as water on the Earth, indicating that the Moon's water may have come...

SpaceX to move Grasshopper tests to Spaceport America
Posted: Thu, May 9 7:24 AM ET (1124 GMT)
SpaceX will conduct future flight tests of a reusable launch vehicle technology demonstrator at Spaceport America in New Mexico, spaceport officials announced Tuesday. SpaceX has...

Vega launches three satellites
Posted: Tue, May 7 6:36 AM ET (1036 GMT)
After a three-day delay because of weather, a European Vega rocket successfully launched three small satellites Monday night. The Vega lifted off from Kourou,...

Orbital sets date for first Cygnus mission to ISS
Posted: Tue, May 7 6:25 AM ET (1025 GMT)
Orbital Sciences Corporation announced Monday that it plans to launch its first Cygnus cargo mission to the International Space Station in August or September. The...

Winds postpone Vega launch
Posted: Sat, May 4 9:19 AM ET (1319 GMT)
High upper-level winds forced controllers to scrub Friday night's scheduled launch of Europe's Vega small launch vehicle from French Guiana. Vega was...