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Following a slight delay, Expedition 45 Flight Engineer Kimiya Yui of JAXA, backed up by NASA Flight Engineer Kjell Lindgren, commanded the station's Canadarm2 robotic arm to release JAXA's H-II Transfer Vehicle (HTV)-5 ...

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Unusual ripples in Saturn's rings are revealing the mysterious inner workings of the great gas giant.

NASA and Mars planetary scientists announced today (Sept. 28) that salty "liquid water flows intermittently" across multiple spots on the surface of today's Mars – trumpeting a major scientific discovery with far reach...

A former Ansari X Prize competitor plans to carry out tests of high-altitude drones and suborbital rockets at New Mexico's Spaceport America.

See how NASA and Ridley Scott brought Mars exploration to the public with 'The Martian,' a film starring Matt Damon as a stranded astronaut.

A long-delayed strategy to guide NASA's efforts to search for life beyond Earth is finally nearing completion, more than a year later than originally planned, the agency's chief scientist said Sept. 29. SpaceNews.com

The once-controversial Near-Field Infrared Experiment was designed in part to characterize rocket exhaust plumes. SpaceNews.com

The search for extra-terrestrial life just got a big boost from NASA's stunning announcement that it now has its strongest evidence yet of liquid water on Mars.

India's PSLV rocket on Sept. 28 placed the nation's first astronomy satellite into a near-equatorial low Earth orbit along with six secondary payloads that included satellites owned by prospective competitors in commerci...

The Art of Ed Belbruno: Exclusive Space.com Event

U.S. law forbids bilateral cooperation between NASA and China, so the U.S. agency would funnel its contribution to the Solar wind Magnetosphere Ionosphere Link Explorer through ESA. SpaceNews.com

The U.S. Air Force has signed off on Lockheed Martin's final design for a next-generation space surveillance radar, paving the way for construction of the billion-dollar sensor to begin. SpaceNews.com

Walking an obstacle course on Earth is relatively easy. Walking an obstacle course on Earth after being in space for six months is not quite as simple. The longer an astronaut spends in space, the more difficult it is fo...

In parts of Northern California, background ozone levels already account for more than three-quarters of total ozone, leaving little room for local ozone production if stricter standards go into effect....

The Google Doodle for today (Sept. 29) features an adorable custom video that celebrates the recent discovery of liquid water on the surface of Mars.

The twitter account for the upcoming movie "The Martian," due out this Friday (Oct. 2) released a very special video following NASA's announcement of liquid finding water on the surface of Mars.

Family members of the late Leonard Nimoy -- Spock, to millions of "Star Trek" fans -- are trying to raise half a million dollars for a documentary about the disease that claimed his life.

NASA's New Horizons has been squirting its recorded data (to antennas of the Deep Space Network) since the probe's high speed flyby on 14 July 2015. Features as small as 270 yards (250 meters) across can now be discerned...

After decades of speculation, scientists now know for sure that liquid, salty water flows on the surface of Mars.

Mars water -- HTV's delayed departure -- Space Fence passes CDR -- NASA terminates B612 agreement SpaceNews.com