An advanced alien civilization arrives on Earth, and humanity has just 48 hours to respond. This hypothetical scenario ...

UFOs could be using our oceans to remain hidden from humanity, a retired US admiral has suggested, as a huge underwater feature has been touted as a possible entrance to one such secret hideout.

Searching for alien signals sounds like a question of which star to aim a telescope at. It’s also a question of when to listen, because a civilization sending a focused radio beam toward Earth might ...

Ten years after Denis Villeneuve’s mind-bending sci-fi hit, EW breaks down the aliens’ true purpose, the mystery of Amy Adams ...

It is often suggested that this may have already happened: alien technosignatures may have reached Earth during the past six decades but have gone unnoticed. If that is true, it suggests that more ...