NASA postpones NuSTAR launch
Posted: Sat, Mar 17 9:39 AM ET (1339 GMT)
As astronomy satellite that had been slated for launch this month will remain on the ground for up to two more months to correct a...

Pratt & Whitney Rocketdyne put up for sale
Posted: Fri, Mar 16 6:27 AM ET (1027 GMT)
United Technologies announced Thursday it would sell Pratt & Whitney Rocketdyne (PWR), the business unit that manufactures rocket engines, to help pay for the acquisition of...

Study: long-duration spaceflight may damage eyesight
Posted: Thu, Mar 15 8:32 AM ET (1232 GMT)
Some astronauts who have spent extended time in space have suffered optical abnormalities that could affect their eyesight, scientists reported this week. In a paper...

Boeing, SpaceX win multi-satellite deal
Posted: Wed, Mar 14 6:15 AM ET (1015 GMT)
Boeing will build four "all-electric" satellites for a pair of commercial customers, who will launch the satellites with SpaceX, the companies announced Tuesday. Asia...

Arianespace, Sea Launch announce launch contracts
Posted: Tue, Mar 13 6:41 AM ET (1041 GMT)
Commercial launch providers Arianespace and Sea Launch announced a total of three new launch contracts on Monday. Arianespace announced it won a contract from Eutelsat...

Asteroid impact may explain Moon's magnetic anomalies
Posted: Sat, Mar 10 9:38 AM ET (1438 GMT)
A giant asteroid hitting the Moon's south pole four billion years ago may explain the magnetic field anomalies found there, scientists reported this week....

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...