China's reusable space plane is circling Earth once again. The Shenlong ("Divine Dragon") spacecraft launched from Jiuquan ...

One of the biggest libraries for declassified government files was mysteriously wiped clean just hours after President Trump ...

A viral Obama podcast answer about aliens prompted Trump to accuse him of revealing secrets and promise to release UFO files ...

Bring up aliens and a lot of people will scoff. But not everyone is laughing. Around the turn of the century, 3.8 million ...

Since the first Search for Extraterrestrial Intelligence (SETI) experiment in 1960, scientists have been scanning the Milky ...

"He gave classified information, he's not supposed to be doing that," Trump told reporters Feb. 19 in discussing Obama's ...

More than 2,500 alien plant species could find suitable conditions in the Arctic, especially in northern Norway and Svalbard.

Human intelligence wasn’t a cosmic evolutionary fluke, some scientists say. The case against cosmic loneliness is growing.

Planet K2-18b, an apparent water world 124 light years away, has been seen as a promising location in the search for aliens, ...

For more than 60 years, scientists have been scanning the skies for signs of intelligent life beyond Earth. Using powerful telescopes, they have searched for unusual radio signals, brief laser flashes ...

For decades, scientists have searched the skies for signs of extraterrestrial technology. A study from EPFL asks a sharp ...