Two big trends have radically transformed space exploration over the past decade: the privatization of the space industry thanks to Elon Musk and the rise of the Chinese space program. What does this mean for NASA's mission in the 21st century? Are we on the verge of geopolitical battles with China over Moon territories? Why does Elon maybe want to nuke Mars? Space journalist and author Eric Berger joins us to look at what we can expect as humanity enters the next great era of space travel.

Eric Berger is the author of "Liftoff: Elon Musk and the Desperate Early Days That Launched SpaceX." He is the senior space editor at Ars Technica, covering SpaceX, NASA, and everything beyond. Follow him on Twitter at @SciGuySpace.