A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the White House to lead a ...

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 truth is out there '€” and it's been declassified. Join us as we count down the most compelling UFO files released by the ...

From flying saucer sightings to an Air Force-funded study at CU Boulder, the city played an unexpected role in America's UFO ...

"This is a detective story that can be resolved with better data," Harvard astrophysicist Avi Loeb told Newsweek.

A NASA astronaut preparing for a grueling eight-month stint in orbit reveals a plan to test for extraterrestrial life.