It comes after the US president directed his administration to declassify more information on the issue ...

WASHINGTON (AP) — A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the White House to lead a team of outside scientists to study the national security ...

For the last decade Harvard astronomer Avi Loeb has been scanning the skies and seas for evidence of intelligent alien life.

The Harvard astrophysicist has devoted years—and thousands of interviews—to the idea that mysterious objects streaking ...

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

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

SETI scientists searched the interstellar object 3I/ATLAS for radio signals that could indicate extraterrestrial technology ...

In these science fiction books, extraterrestrial beings are sympathetic, horrifying and everything in between. By James S.A. Corey James S.A. Corey is the pen name of Daniel Abraham and Ty Franck, the ...

Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about modern anxieties than the past itself? The idea that aliens assisted the ...

BERLIN — Erich von Däniken, the Swiss author whose bestselling books about the extraterrestrial origins of ancient civilizations brought him fame among paranormal enthusiasts and scorn from the ...