Our favourite space rock expert Greg Brennecka joins us to talk about the amazing Hayabusa2 mission, the sample return mission to asteroid Ryugu by Japanese space agency JAXA. Greg and his colleagues have been analysing the sample and some of the findings are incredible.What does Ryugu tell us about the early solar system? What do we learn about water on bodies like asteroids? and could Ryugu be carrying enough of the building blocks of life to potentially populate another habitable planet?It's a fascinating chat. If you want to learn more about rocks from space, check out Greg's book 'Impact' at Harper Collins hereSee Hayabusa2's touch and go sample collection on Ryugu https://www.youtube.com/watch?v=4xnInpqMiG4Hayabusa2 landed back on Earth at the Woomera Rocket Range in South Australia, December 2020 https://www.youtube.com/watch?v=Ek1MRUbJSo8 Follow Cosmic Coffee Time on Twitter for some special contenttwitter.com/CosmicCoffTime You can request a topic for the show! Or even just say hi!We'd love to hear from you. Email us!cosmiccoffeetime@gmail.com