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.

This is read by an automated voice. Please report any issues or inconsistencies here. In an appearance at the SXSW Film & TV Festival, Steven Spielberg revealed his own feelings about intelligent life ...

"I have to make a date with my husband because I don't want to see it by myself in case one of those things comes out of the screen," the actress revealed. Sigourney Weaver remains wary of xenomorphs ...