Black holes can be petite, with masses only about 10 times that of our sun -- or monstrous, boasting the equivalent in mass up to 10 billion suns.
Astronomers have spotted what appear to be two supermassive black holes at the heart of a remote galaxy
After a year of observations, scientists waited with bated breath on Nov. 28, 2013, as Comet ISON made its closest approach to the sun, known as perihelion.
President Barack Obama has signed HR 667, the congressional resolution that redesignates NASA's Hugh L. Dryden Flight Research Center as the Neil A. Armstrong Flight Research Center
Throughout our universe, tucked inside galaxies far, far away, giant black holes are pairing up and merging.
A comet's journey through the solar system is perilous and violent.
The manual introduces the fundamentals of cyber operations, or "cyber electromagnetic activities" (CEMA), defining terms and identifying important operational factors and constraints.
Divers working at a Russian lake have recovered a half-tonne chunk of the space rock that exploded over Chelyabinsk earlier this year.
Continuing a history of surprising behavior, material from Comet ISON appeared on the other side of the sun on the evening on Nov. 28, 2013
NASA spacecraft orbiting Mars have returned clues for understanding seasonal features that are the strongest indication of possible liquid water that may exist today on the Red Planet.
Since last year’s revelations about the National Security Agency’s massive communications data dragnets, the spy agency has been inundated with requests
A "massive and unprecedented intrusion" into how news organizations gather the news.
Even though the world's most powerful atom-smasher was completed just six years ago, its makers are already looking ahead to the next one.
Scientists from NASA and the Planetary Science Institute in Tucson, Ariz., have identified what could be a supervolcano on Mars—the first discovery of its kind.
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