NavIC operates on a smaller scale than its American counterpart, however. It's "a regional navigation satellite system designed to provide accurate Position, Navigation and Timing (PNT) service to ...

A giant star with a puzzling name Even the translation of Betelgeuse's name is contentious. For a long time, it was thought to be a corruption of three Arabic words, usually translated as "The Armpit ...

Stewart's "Star Trek: The Next Generation" family shared their grief and offered up poignant words to try to describe what effect he had on their lives and profession. "There's no one on this planet ...

A commercial satellite has spotted the International Space Station, giving us a unique view of the orbiting lab from above.

NOAA has issued a G2 geomagnetic storm watch for Oct. 9 as the CME races toward Earth, potentially boosting the northern lights as low as Idaho and New York.

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Editor's note: This story contains discussion of astronaut fatalities and dangerous moments in human spaceflight. It was 40 years ago today (Jan. 28) that the space shuttle Challenger blasted off on ...