NASA administrator defends budget request
Posted: Fri, Mar 9 6:57 AM ET (1157 GMT)
The head of NASA visited Capitol Hill on Wednesday, making separate appearances in House and Senate hearings to support the agency's 2013 budget request....

Powerful solar flares erupt
Posted: Thu, Mar 8 6:48 AM ET (1148 GMT)
A pair of solar flares, including the second biggest of the current solar cycle, erupted on the Sun this week, threatening to create a geomagnetic...

Leadership shakeup for new ISS nonprofit
Posted: Wed, Mar 7 7:33 AM ET (1233 GMT)
A nonprofit organization established last year to handle research on the US portion of the International Space Station (ISS) has lost its first leader over...

Cassini detects tenuous atmosphere around Saturn moon
Posted: Tue, Mar 6 6:50 AM ET (1150 GMT)
Scientists have found that an icy moon of Saturn has a very tenuous atmosphere of molecular oxygen. Instruments on NASA's Cassini spacecraft detected the...

ESA delays next ATV launch
Posted: Sat, Mar 3 11:51 AM ET (1651 GMT)
The European Space Agency announced Friday that it has delayed the upcoming launch of an ISS cargo spacecraft in order to perform additional checks on...

Next Falcon 9 passes dress rehearsal
Posted: Fri, Mar 2 10:52 AM ET (1552 GMT)
A SpaceX rocket scheduled to launch a cargo demonstration mission to the ISS this spring successfully completed a dress rehearsal of its launch on Thursday....

Canada extends support for ISS
Posted: Thu, Mar 1 8:54 AM ET (1354 GMT)
The Canadian government announced Wednesday it has formally agreed to continue its participation in the International Space Station beyond 2015, making it the last of...

LightSquared CEO steps down
Posted: Wed, Feb 29 8:45 AM ET (1345 GMT)
The CEO of a controversial communications company that sought to develop a hybrid satellite-terrestrial network resigned on Tuesday. Sanjiv Ahuja resigned as CEO of...

NASA establishes Mars planning group
Posted: Tue, Feb 28 8:49 AM ET (1349 GMT)
NASA announced Monday it was creating a new planning group to study potential future robotic Mars missions in the wake of the administration's decision...

Atlas launches military communications satellite
Posted: Sat, Feb 25 10:19 AM ET (1519 GMT)
After two weather-related delays last week, an Atlas 5 rocket successfully launched the first in a new generation of military communications satellites on Friday....