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I WAS THERE! How David Blaine flew helium balloons to the height of jets (and jumped)
Season 4
Episode 29
10:12
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Physics Girl
How the Edge of Our Galaxy Defies Known Physics
Season 4
Episode 16
How is it possible that you can't see 95% of the universe? The edge of our milky way defies known physics, so physicists are using the LHC at CERN to search for Dark Matter.
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