The Universe Season 2 Episode 12
Our universe is a cosmic shooting gallery, gravity is moving everything around & things will collide. Astronomers are attempting to understand how collisions occur in space.
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Serie: The Universe
Director: Alex Filippenko, Clifford V. Johnson, Erik Thompson, Geoff Marcy, Laura Danly, Lawrence Krauss, Michelle Thaller, Michio Kaku, Neil deGrasse Tyson, Phil Plait
Guest Star: Alex Filippenko, Erik Thompson