This memo is out of this world. Mysterious sightings of ‘three to four-foot tall’ beings decked out in space suits and helmets were reported by witnesses decades ago, newly released Pentagon files reveal.

A new government website where the Pentagon says it has published 'never-before-seen' files on unidentified aerial phenomena is live.

The administration says the public can draw its own conclusions with the information in the files, which includes old State Department cables, FBI documents and transcripts from NASA of crewed flights into space.