The latest discovery may stand as the most compelling clue humanity has ever had that we are not alone.

The universe contains billions upon billions of stars, countless planets and seemingly endless opportunities for life to ...

A rather outlandish claim that an alien gun was spotted in a photo taken on Mars 12 years ago has drawn attention.

Avi Loeb, a distinguished cosmologist who previously led Harvard’s astronomy department until 2020 and conducted extensive research on black holes, was recently appointed to chair a new scientific ...

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 ...

Vanity Fair reports from the Capitol Hill conference, where members of a sprawling community of national security experts and ...

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 ...

God and aliens are having a moment. But what do Christianity and other faiths really teach about ETs?

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