Proton launches communications satellite
Posted: Sat, May 21 9:27 AM ET (1327 GMT)
A Proton rocket successfully launched an American commercial communications satellite early Saturday. The Proton M lifted off from the Baikonur Cosmodrome at 3:15 pm...

Astronauts complete first STS-134 spacewalk
Posted: Sat, May 21 9:08 AM ET (1308 GMT)
Two astronauts spent more than six hours outside the International Space Station Friday performing maintenance on the station. Andrew Feustel and Gregory Chamitoff spent six...

NASA sets launch date for final shuttle mission
Posted: Fri, May 20 4:43 PM ET (2043 GMT)
NASA announced Friday that it has scheduled the launch of Atlantis on the final mission of the shuttle program for July 8. Atlantis will launch...

AMS installed on ISS
Posted: Fri, May 20 8:01 AM ET (1201 GMT)
Astronauts installed a billion-dollar physics experiment on the exterior of the International Space Station on Thursday. Astronauts used the shuttle and station's robotic...

Free-floating planets may outnumber stars
Posted: Thu, May 19 8:19 AM ET (1219 GMT)
The detection of a group of large planets not orbiting any stars has led a team of astronomers to conclude that there may be more...

Shuttle docks with ISS
Posted: Wed, May 18 11:38 PM ET (0338 GMT)
The space shuttle Endeavour docked with the International Space Station for the final time on Wednesday. Endeavour docked with the station's Harmony node at...

Endeavour lifts off on its final mission
Posted: Mon, May 16 11:05 AM ET (1505 GMT)
The space shuttle Endeavour launched Monday morning on its final mission and the second-to-last mission of the shuttle program overall. Endeavour lifted off...

Countdown begins again for shuttle launch
Posted: Sat, May 14 8:44 AM ET (1244 GMT)
NASA started countdown clocks on Friday for Monday morning's scheduled launch of the space shuttle Endeavour on that orbiter's final mission. Countdown clocks...

Volcanic moon Io has molten interior
Posted: Fri, May 13 6:51 AM ET (1051 GMT)
Planetary scientists have determined that Io, a large, volcanically-active moon of Jupiter, has a layer of molten or partially molten magma in its interior....

Japan declares Earth sciences spacecraft lost
Posted: Thu, May 12 7:43 AM ET (1143 GMT)
The Japanese space agency JAXA has ended efforts to try and recover an Earth sciences spacecraft that suffered a malfunction last month, sending commands to...