Decades of retrofuturustic dreaming, now Elon Musk and NASA: visiting Mars has always seemed just of our reach. But how far away is humans' first visit?Sarah and Luke answer one of science's longstanding questions on today's episode, as we look into the financial and psychological cost of reaching the Red Planet. Decades of expertise is provided by Dr Andy Aldrin, Dr Tanya Harrison and Dr Robert Zubrin.Which inventions should we look into next? Let us know on Twitter @SarahCruddas @lukeaaronmoore @StakPod***Please take the time to rate and review us on Apple Podcasts or wherever you get your pods. It means a great deal to the show and will make it easier for other potential listeners to find us. Thanks!*** Our GDPR privacy policy was updated on August 8, 2022. Visit acast.com/privacy for more information.