This file argues that the biggest obstacle in the alien debate may no longer be the total lack of evidence, but the impossible standard for what counts as final proof. From the Wow! signal to Martian methane and disputed fossils,

Obama emphasized there’s no way such a secret could stay confidential. “If there were aliens or alien spaceships or anything under the

Dan Farah, director of the UFO documentary “The Age of Disclosure,” joins “Elizabeth Vargas Reports” to evaluate the latest Pentagon release of files on “unidentified anomalous phenomena,” including videos that show inexplicable objects.

A new batch of declassified Pentagon UFO materials is fueling fresh public fascination — but files still do not confirm extraterrestrial life.

The scientific community tends to employ ‘confidence of life’ detection scales: a multi-step ‘ladder’ that begins with biosignatures.

Americans are set to see UFO and alien-related evidence on Capitol Hill in just days, as supporters of disclosure say the movement has reached a tipping point.