Elon Musk has turned a long-running joke about being an extraterrestrial into a central part of his public persona, even as he argues that humanity may be the only intelligent life in the universe.

The idea that humanity may soon meet extraterrestrial beings has long belonged to science fiction. But one man who claims to have spent four decades communicating with an alien intelligence says the ...

In a chilling new wave of whistleblower claims, former military insiders have suggested that humanity is not a free species exploring the universe, but a quarantined population trapped inside an alien ...