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

New research suggests that alien radio signals may be transformed by plasma from their home stars — and scientists on Earth ...

This video breaks down why K2-18b has suddenly become one of the most important planets in the search for life beyond Earth.

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

Steven Spielberg's new blockbuster coincides with real-world disclosures about the government's investigation of unidentified ...

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

Scientists are raising concerns that we may be overlooking evidence of extraterrestrial life even when it is present. Hidden ...

The SETI Institute is the latest to confirm what scientists have long suspected: the interstellar 3I/ATLAS comet is not an alien spaceship.

The question of whether humanity is alone in the universe has fascinated scientists for generations, but few have pursued an ...

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