In the last few years, Robbie Williams has become obsessed with UFOs and aliens. In this Radio 4 documentary, Jon Ronson travels with him to a UFO conference in Laughlin, Nevada, where they meet a doctor who claims to own 15 extraterrestrial metallic objects, and a woman who believes her son was abducted by aliens. Robbie, it seems, doesn't share Ronson's scepticism, declaring: "I don't want to hear any debunking because I want to believe."

Robbie Williams and Jon Ronson Journey to the Other Side is on Radio 4, at 6.30pm Tuesday 6 May. The programme audio will be available on the iPlayer for 7 days after the broadcast. The Guardian ran an article by Jon Ronson in which he describes his meeting with Robbie, which you can read here. And in the next issue of FT David Clarke and Andy Roberts will be giving their take on the story, while Jenny Randles will be remembering an old UFO case involving one of Robbie's Take That ex-band mates...