A documentary, 'The Age of Disclosure', argues that alleged encounters with unidentified anomalous phenomena have been processed within classified defence programmes rather than dismissed as fantasy.

From the Star Wars spin-off The Mandalorian to the classic series Star Trek: The Next Generation, these are the best sci-fi shows that feature aliens.

Donald Trump's latest release of declassified UFO files has renewed scrutiny of one of the most enduring questions in modern science and politics: do aliens exist? The newly published material adds to ...