NPR's Scott Detrow talks with astrophysicist Adam Frank about the government's release of files related to Unidentified Anomalous Phenomena.

A newly declassified FBI memo discussing messages from 'aliens' was part of the Trump administration's latest UFO disclosure release on Friday.

UFO belief is not a religion in the traditional sense. There are no centralized leaders: no popes, no universally recognized doctrines, no sacred text and no institution capable o

Flying discs, metallic orbs, and a mysterious cylinder tumbling past the Apollo spacecraft. Those are just a few of the unidentified anomalous phenomena, or UAP, contained in a batch of government files the Department of Defense released this month.

Perspective: As things stand, the files say implicitly what officials won't explicitly. For now, it's all aboard the intergalactic hype train.

Harvard physicist Avi Loeb discusses the Pentagon's UFO files, highlighting potential adversarial advancements and extraterrestrial possibilities.