Scientists have been searching for radio signals from hypothetical alien civilizations using radio telescopes for decades.

Strange, sinuous gullies etched into the dunes of Mars are finally giving up their secrets. These gouges, new experiments ...

June Lockhart, beloved for her roles in “Lassie” and “Lost In Space,” has died at 100. She died Thursday of natural causes at ...

NASA's Ingenuity team reads postcards sent to the little chopper on Mars. Credit: NASA / JPL-Caltech Trump administration ...