Mercury has molten core
Posted: Sat, May 5 10:03 AM ET (1403 GMT)
Scientists have determined that the core of innermost planet Mercury is most likely molten, a discovery that may explain why the planet is able to...

Winds delay Ariane launch
Posted: Fri, May 4 8:23 AM ET (1223 GMT)
Gusty high-altitude winds delayed Thursday's scheduled launch of two communications satellites on an Ariane 5. The Ariane 5ECA was scheduled to lift off...

Wally Schirra passes away
Posted: Thu, May 3 8:40 PM ET (0040 GMT)
Walter "Wally" Schirra, a member of the original group of NASA astronauts and the only one to fly on Mercury, Gemini, and Apollo missions, passed...

Train carrying shuttle SRB segments derails
Posted: Thu, May 3 7:42 AM ET (1142 GMT)
A train carry shuttle solid rocket booster (SRB) segments for use on a launch later this year derailed Wednesday, injuring several people. The train, en...

Mars subsurface ice is patchy
Posted: Thu, May 3 7:32 AM ET (1132 GMT)
The depths below the surface where water ice exists near the polar regions of Mars depends strongly on the properties of the surface, scientists reported...

Pluto-bound spacecraft provides close-up look at Jupiter system
Posted: Wed, May 2 8:45 AM ET (1245 GMT)
A Pluto-bound spacecraft that flew past Jupiter in late February has provided scientists with their first close-up look at an emerging storm in...

Orbital wins contract for Intelsat spacecraft
Posted: Wed, May 2 8:39 AM ET (1239 GMT)
Orbital Sciences Corporation announced Tuesday that it has won a contract from Intelsat to build a new communications satellite. The IS-15 spacecraft is based...

Suborbital rocket launch a success
Posted: Mon, Apr 30 8:33 AM ET (1233 GMT)
A commercial suborbital sounding rocket successfully launched from New Mexico Saturday, carrying a payload that included the ashes of an astronaut and actor. The UP...

Report: Boeing considering commercial Delta 4 launches
Posted: Sat, Apr 28 11:35 AM ET (1535 GMT)
Boeing is considering returning the Delta 4 launch vehicle to the commercial market to help make up for weak government launch schedules, the Wall Street...

Europe considering all-public Galileo financing
Posted: Sat, Apr 28 11:29 AM ET (1529 GMT)
Discouraged by continued delays in negotiating a public-private partnership, European officials are considering going ahead with the development of its Galileo satellite navigation system...