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.

The White House will begin releasing a first batch of so‑called 'alien files' in Washington on Friday, according to a senior US ...

Cambridge has been dubbed the UK’s “alien capital” after a new analysis of police UFO reports found it logged the most ...

Earlier this year, President Trump directed agencies to begin the process of identifying and releasing files related to alien and ...