Are we alone?

Donald Trump promised to release classified files about extraterrestrials. But even if they disappoint the millions of people hoping to find proof of existence of aliens, there is a growing belief in the scientific community that it is only a matter of time before proof of life outside our solar system is found.Reporter: Giles WhittellProducer: Matt RussellSound design: Dominic DelargyArtwork: Lola WilliamsEditor: Jasper CorbettTo find out more about Tortoise:Download the Tortoise app – for a listening experience curated by our journalistsSubscribe to Tortoise+ on Apple Podcasts for early access and ad-free contentBecome a member and get access to all of Tortoise's premium audio offerings and moreIf you want to get in touch with us directly about a story, or tell us more about the stories you want to hear about contact [email protected] Hosted on Acast. See acast.com/privacy for more information.