Friend of Cosmic Coffee Time and expert meteoriticist Greg Brennecka returns to talk about the breathtaking detection of a new meteorite impact on Mars. Greg tells us how the impact was detected, and then confirmed with detailed imagery from Mars orbit. What does this tell us about the subsurface geology of Mars, and what does it mean for astrobiology and the future exploration of Mars and beyond?It's a fascinating chat.Find Greg's book 'Impact' at Harper Collins hereFollow Cosmic Coffee Time on Twitter for some special contenttwitter.com/CosmicCoffTimeYou can request a topic for the show! Or even just say hi!We'd love to hear from you.Email us!cosmiccoffeetime@gmail.com