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, who became a mother figure for a generation of television viewers whether at home in “Lassie” or up in the ...

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