Project Blue Beam has resurfaced repeatedly across social media over the last few years, especially during discussions about UFOs, drones, artificial intelligence, deepfakes, and government secrecy.

Astronomer Geoff Marcy is the Usain Bolt of planet hunters, but now he is turning his gaze towards potential alien civilisations. The good news, he tells Anil Ananthaswamy, is that ET may already be ...