James Van Allen dies
Posted: Wed, Aug 9 1:41 PM ET (1741 GMT)
James A. Van Allen, the scientist who was one of the pioneers of the early US space program and the discoverer of the Earth-girdling...

Chandra measures Hubble constant
Posted: Wed, Aug 9 8:55 AM ET (1255 GMT)
Astronomers have used data from NASA's Chandra X-Ray Observatory to make an independent measure of the Hubble constant, a key metric of the...

Proton launches communications satellite
Posted: Sat, Aug 5 7:29 AM ET (1129 GMT)
A Proton rocket launched a European satellite Friday night on the first commercial mission for the rocket since a failure five months ago. The Proton...

ISS crew completes spacewalk
Posted: Fri, Aug 4 6:39 AM ET (1039 GMT)
Two astronauts performed a six-hour spacewalk outside the International Space Station on Thursday that was so productive that they were able to perform several...

Antenna failure disrupts DSN
Posted: Thu, Aug 3 6:33 AM ET (1033 GMT)
A key antenna of NASA's Deep Space Network will remain offline longer than planned, potentially disrupting a number of missions. The 70-meter antenna...

Atlantis rolled out to launch pad
Posted: Wed, Aug 2 7:46 PM ET (2346 GMT)
The space shuttle Atlantis is now on its launch pad in preparation for a launch later this month after weather finally allowed NASA to roll...

Dust storms may rule out Martian life on surface
Posted: Wed, Aug 2 8:01 AM ET (1201 GMT)
Planet-wide dust storms that periodically form on Mars may create powerful chemicals that would inhibit the development of life on the planet's surface,...

Manufacturing defect blamed for Dnepr failure
Posted: Mon, Jul 31 8:20 AM ET (1220 GMT)
The crash of a Dnepr rocket carrying 18 satellites last week was likely caused by a manufacturing defect with the rocket, Russian officials said Sunday....

Shuttle rollout delayed
Posted: Mon, Jul 31 8:08 AM ET (1208 GMT)
NASA has delayed the rollout of the shuttle Atlantis because of stormy weather at the Kennedy Space Center. NASA has planned to start moving Atlantis...

Atlas to launch LRO
Posted: Sun, Jul 30 1:52 PM ET (1752 GMT)
NASA has awarded Lockheed Martin a contract to launch the space agency's first lunar mission in a decade on an Atlas 5. Lockheed will...