It takes about a quarter billion years to fullity go through this collision. So we know they happened, primarily only because we simulate them on the computers. If you e t collide two galaxies, every inch the galaxy moves closer to itself. And once you go through this exercise, that's when you find this extraordinarily balletic collision. It's like two, it's like a train rack, right? The structure, the beautiful structures of the galaxies, get completely destroyed and distorted - just beautiful.
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?
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Photo Credit: NASA
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