A former CIA-linked physicist's comments about 'four alien species' have reignited UFO conspiracy theories online.

Donald Trump's declassified UFO files and the documentary Sleeping Dog reignite the debate on extraterrestrial life, yet officials maintain no evidence confirms alien existence.

A new batch of over 200 files has today been released by the Pentagon – containing remarkable video of what appear to be spherical aircraft of unknown origin ...

Another batch of "UFO Files" have been dropped by the Pentagon, featuring previously classified documents, audio and footage of strange objects in the sky. The new release comes two weeks after the ...

The blockbuster release of Pentagon UFO files under President Donald Trump's push for transparency has triggered widespread panic that ETs are already among us and possess technology far superior to ...

Add Yahoo as a preferred source to see more of our stories on Google. A renewed push in Washington is bringing one of the world's most controversial UFO cases back into the spotlight—this time with ...

The Pentagon on Friday released a third batch of vintage classified files related to “flying saucers” and other unidentified anomalous phenomena — better known to most Americans as unidentified flying ...