The U.S. government, led by the Pentagon and CIA, censored or withheld for reasons of national security
Since last year’s revelations about the National Security Agency’s massive communications data dragnets, the spy agency has been inundated with requests
Mars rover, Opportunity, is driving to a new study area after a dramatic finish to 20 months on "Cape York" with examination of a rock intensely altered by water.
Elite U.S. Marines arrived in the Libyan capital more than 23 hours after the deadly Sept. 11 assault on a diplomatic mission in the city of Benghazi began
The following is a statement from NASA Administrator Charles Bolden on the passing of original Mercury astronaut Malcom Scott Carpenter
A University of Colorado Boulder research center will launch two payloads aboard Orbital Sciences Corp.’s commercial Cygnus spacecraft
Astronomers using the NASA/ESA Hubble Space Telescope have captured new images of the dancing auroral lights at Saturn’s north pole.
What might look like a colossal jet shooting away from a galaxy turns out to be an illusion.
For the first time in more than a decade, five NASA Earth science missions will be launched into space in the same year, opening new and improved remote eyes to monitor our changing planet.
Dismounted Soldiers carrying full battle gear are pushed to their physical limits.
Despite statements by Vice President Joe Biden, the State Department is about to begin formal negotiations over the extension of U.S. troops past 2014
NASA has completed the first step toward a mission to find and capture a near-Earth asteroid, redirect it to a stable lunar orbit and send humans to study it.
While others speak of curbing intelligence surveillance activities, the Defense Science Board argues in a new report that the U.S. government should expand and accelerate
Defying 30 mph gusts and temperatures down to minus 22 F, NASA’s new polar rover recently demonstrated in Greenland that it could operate
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