Advanced aliens, if they exist, may have no physical bodies at all and could be built from materials nothing like human flesh ...

Once it was clear that the finding was most likely real, the team took a closer look at the chemistry of the material nearest ...

When the U.S. was born, humanity was still seven years away from balloon-borne flight. Where might we be another 250 years ...

A set of protocols telling scientists what to do – and what not to do – if they ever detect evidence of intelligent life ...

Avi Loeb, a Harvard astronomer who has made headlines with his theories about alien encounters, will lead a White House ...

A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the Trump administration to ...

Speaking for the first time since a chilling experience four decades ago, Paul Jones and his mum Daphne reveal how their trip ...

Scientists say moons around rogue planets wandering through the galaxy could remain warm enough for life thanks to tidal heating and hydrogen-rich atmospheres. These dark, starless worlds may have had ...

As much as Steven Spielberg likes aliens, he seems to prefer holding them at arm’s length. The creatures in Close Encounters ...

One of the UFO world's most outspoken skeptics has apologized to one of its most famous whistleblowers. Michael Shermer's ...

MOVE over Mulder and Scully, Bradley Walsh is opening his own X Files. The TV favourite is swapping The Chase for close ...