NASA's nearly doubled the number of known exoplanets in one fell swoop, with the announcement of 11 new planetary systems hosting 26 planets.
NASA is poised to kick off a new series of tests on the J-2X - the engine that will help carry humans to deep space.
NASA has reversed an earlier decision to block the release of the first science fiction movie filmed in space.
"Man on a Mission," a film documenting Richard Garriott's journey to the International Space Station (ISS) may have hit theaters, but there is another movie NASA apparently doesn't want you to see.
NASA's discovered its tiniest solar system yet, which includes the three smallest exoplanets ever found.
NASA's Hubble Space Telescope has detected the weak glow of a star that exploded more than 9 billion years ago.
NASA says it'll do its best to resolve a dispute over an astronaut's attempts to auction off a notebook used in the Apollo 13 mission.
NASA's Mars Exploration Rover Opportunity is set to ride out the worst of the Martian winter at Greeley Haven, a rocky outcrop recently named after ASU Regents' Professor Ronald Greeley, a planetary geologist who died last October.
The first big meteor shower of 2012 is set to kick off early Wednesday morning from about 3-5 a.m.
NASA's two GRAIL probes have now successfully been placed in orbit around the moon.
NASA's twin GRAIL spacecraft will be placed into orbit around the moon over the New Year weekend, in preparation for their mission to study its composition and gravity field.
NASA has released a number of new images of Saturn and Titan snapped by the agency’s Cassini spacecraft.
NASA says its discovered two Earth-sized planets that have been swallowed up by their star - and survived.
By 2100, nearly 40 percent of land-based ecosystems - forest, grassland or tundra, for example - will have moved from one type to another.
To the surprise and delight of astronomers, a comet discovered just two weeks ago as it hurtled towards the sun has skimmed the star and re-emerged the other side.
NASA's Rossi X-ray Timing Explorer (RXTE) satellite has identified a candidate for the smallest-known black hole.
NASA is planning to use a giant crossbow and harpoon to capture samples from a speeding comet.
NASA's Dawn spacecraft has successfully maneuvered into its closest orbit around the giant asteroid Vesta.
There may finally be an explanation as to why the federal government has adopted such a harsh stance against the unauthorized trade of moon rocks.
New research from NASA into the Earth's paleoclimate history indicates we could be facing rapid climate change this century, including sea level rises of many meters.