A striking optical illusion resembling a floating city or alien spacecraft was captured on camera above the countryside in ...

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 risks posed by UFOs ...

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 ...

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

The first trailer for Not Alone, Illumination's next film starring Timothée Chalamet & Selena Gomez, has been released. The ...

Scientists propose building a lab on the moon to screen Mars and other space samples for alien microbes before they ever ...

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 ...

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

Three companies will receive a total of $600 million to executive four moon landings, laying the groundwork for a planned ...

Astronomers have recently started looking for black holes bigger than galaxies. Brian Lacki explains how these “stupendously ...

Having already delivered samples of the asteroid Ryugu to Earth, Hayabusa2 will soon attempt one of the closest, riskiest ...