More than 500,000 pieces of debris, or “space junk,” are tracked as they orbit the Earth.
A close encounter of the rocky kind is set for Feb. 15, when an office-building-size asteroid will speed past Earth fcloser than some communications satellites.
NASA’s Cassini spacecraft has taken stunning new photos of Venus, according to a space agency news release.
The U.S. Air Force launched the second satellite in its next-generation missile warning constellation Tuesday from Cape Canaveral Air Force Station, Fla.
More than 35 years after it launched on a mission to explore the cosmos, NASA's unmanned Voyager spacecraft appears to have left the solar system.
The sun emitted its sixth significant flare since Oct. 23, 2013, peaking at 11:26 p.m. EST on Nov. 7, 2013.
NASA’s Hubble Space Telescope has observed water vapor above the frigid south polar region of Jupiter's moon Europa
Water has been detected in the atmosphere of a planet outside our solar system with a new technique that could help researchers to learn how many planets with water exist throughout the universe.
MSL's Radiation Assessment Detector (RAD) is the first instrument to measure the radiation environment during a Mars cruise mission
DHS processed a total of 205,895 Freedom of Information Act (FOIA) requests during the year.
The larger of the two moons of Mars, Phobos, passes directly in front of the other, Deimos, in a new series of sky-watching images from NASA's Mars rover Curiosity.
A NASA spacecraft that discovered and characterized tens of thousands of asteroids throughout the solar system before being placed in hibernation will return to service
Obama will have more flexibility in the final stretch, but Romney and his allies have more cash on hand for ad blitzes.
An investigation by El Universal found that between the years 2000 and 2012, the U.S. government had an arrangement with Mexico's Sinaloa drug cartel
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