Veteran NASA astronaut Scott Kelly, Russian cosmonaut Mikhail Kornienko will stay one year aboard ISS - more than twice as long as usual mission
Curiosity's instruments detect sulfur and chlorine-containing substances, and also water molecules
While orbiting Mercury, MESSENGER spacecraft has added support to scientists' beliefs that the planet has water ice at its poles
Washington benefit was organized by women from predominantly Muslim countries
Negotiators from nearly 200 countries, including US, will meet in Doha, Qatar, for UN climate change summit later this month
NASA says Rover's radiation measurements are crucial to begin understanding how a manned mission can be successul on the red planet
US Senate Intelligence Committee will hold a closed hearing Thursday
As voters in US prepare to cast ballots in presidential election on November 6, people around globe wonder how outcome could shape world
No one has ever spent a year on space station in a single mission
Taking supplies to ISS; returning with even bigger load
Liftoff scheduled for late Sunday from Cape Canaveral
Dov Zakheim, who in administrations of Ronald Reagan and George W. Bush, is among Romney's foreign policy advisers.
Delegates converge in Florida to rally around the candidate they hope will win oust President Obama in November
Party members arrive for nominating convention but joined by an unwanted visitor, a tropical storm that threatens to reach hurricane strength
Republican presidential candidate thinks Congressman Paul Ryan is part of his key to success in race against President Barack Obama
Curiosity sends back its first pictures from surface of red planet
Curiosity traveled nearly 570 million kilometers since it was launched in November
Nuclear-powered Curiosity will hunt for evidence of microbes, harvest data, images on Mars
US has not had that capability since it retired its space shuttle fleet last year
U.S. space agency says Curiosity is set to touch down on the Red Planet on August 6
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