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 ...

This new group, which is led by Harvard professor Avi Loeb, aims to advise the Trump administration and the U.S. intelligence ...

A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...

An audio tape reportedly exists of a UFO briefing between Air Force officials and scientists in 1952.

Are aliens real? Was Fox Mulder right all along? We examine the prediction markets to gauge if the U.S. government will confirm that aliens exist before January 2029. The prediction market on a U.S.