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Carl Sagan explains cosmic rays and neutron stars

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Uploaded on Jan 26, 2008

Carl Sagan attempts to detect cosmic rays in a lava tube. The Crab Nebula, the supernova which occured in 1054, is discussed. "Neutron star matter weighs about a mountain per teaspoonful." This video is from Carl Sagan's Cosmos episode 9, "The Lives of Stars."

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