Astronomy Cast Ep. 432: Geologic Ages of Mars - From Wet & Wild to Desolate Desert

https://www.youtube.com/watch?v=4ux5JC10uho Recorded Dec 23, 2016. Today Mars is a desolate wasteland with dusty red rocks and sand stretching out to the horizon, but billions of years ago it was a vastly different world. It was blue, with oceans, rivers , lakes and maybe life? Let's tell the story of geology on Mars. How we got from that world to the crappy one we see today. Do go visit http://astrogear.spreadshirt.com/ for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness! http://cosmoquest.org/Donate This show is made possible through your donations. Thank you! (Haven't donated? It's not too late! Just click!) The 365 Days of Astronomy Podcast is produced by Astrosphere New Media. http://www.astrosphere.org/ Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org. While you're at it, do support our Learning Space educator training program by going to this site: https://www.patreon.com/LearningSpace Please help us keep training the trainers! Learning Space is a weekly G+ Hangout on Air about topics in astronomy education, outreach and other ways to share science both in the school setting and outside it. We bring you interviews, hands-on demonstrations, lists of our favorite educational resources and more!