United Nations Ambassador Susan Rice is meeting with senators on Capitol Hill today to answer questions about the Sept. 11 attack in Benghazi, Libya.
A comet exploded over modern-day Egypt 28 million years ago, raining down fire and leaving behind a "mysterious" black pebble
Newly discovered asteroid 2013 TV135 made a close approach to Earth on Sept. 16, when it came within about 4.2 million miles (6.7 million kilometers).
New questions about government's official story on Kennedy assassination...
As NASA's Dawn spacecraft travels to its next destination, this mosaic synthesizes some of the best views the spacecraft had of the giant asteroid Vesta.
The U.S. government is expanding a cybersecurity program that scans Internet traffic headed into and out of defense contractors
The U.S. Air Force launched the second satellite in its next-generation missile warning constellation Tuesday from Cape Canaveral Air Force Station, Fla.
A rare, recently discovered microbe that survives on very little to eat has been found in two places on Earth: spacecraft clean rooms in Florida and South America.
The sun emitted its sixth significant flare since Oct. 23, 2013, peaking at 11:26 p.m. EST on Nov. 7, 2013.
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
The Defense Department released a detailed timeline yesterday of the Pentagon’s response to the September attack in Benghazi, Libya.
The National Science Foundation (NSF) today announced new investments totaling approximately $38 million for the development and use of robots
The U.S. government, led by the Pentagon and CIA, censored or withheld for reasons of national security
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.
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