A bizarre set of images allegedly showing US President Donald Trump meeting "mysterious human-like figures" at the White House triggered a flood of conspiracy theories across social media on Sunday.

A study has highlighted what meeting an alien civilisation for the first time would be like. David Kipping's research article titled "The Eschatian Hypothesis" presents a hypothesis, according to ...

"If they do say take us to your leader, and that is Donald Trump. I mean, he is the president of America, and that is the leader of the free world. If they're going to base their ideas about how we ...

Add Yahoo as a preferred source to see more of our stories on Google. Photo by Taylor Hill/WireImage/Getty Image Steven Spielberg is looking forward to the release of his UFO film, Disclosure Day.