What happens when two galaxies collide? On this episode, Neil deGrasse Tyson and comic cohost Chuck Nice answer questions about explosions, asteroids, quarks, and all things that go BOOM. Was our Big Bang someone elses Big Rip?
Infectious disease expert Laurie Garrett is back with Neil deGrasse Tyson to answer your questions about deadly viruses and current epidemics like H7N9 influenza and MERS-CoV.