Among the most persistent claims is that extraterrestrials assisted in the construction of ancient civilizations.

President Trump had lashed out at former President Barack Obama earlier Thursday for telling a podcaster that aliens were ...

President Trump directed his administration to release files on UFOs and any "alien and extraterrestrial life," an issue that has drawn decades of fascination — and spawned more than a few wild ...

Trump vows to release Pentagon UFO files; Obama discusses alien life: Movies, online forums to conspiracy theories, why are we fascinated with aliens? The psychology explained ...

In a Truth Social post, the U.S. president said his move was based on the "tremendous interest" in the subject, without providing additional details.

New scientific theory based on ancient proteins suggests that genes did not arise as we believed and that life could have started elsewhere.