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Black Holes When you launch a rock up into the air, it slows and is eventually pulled back down by gravity. If you launch it with more force, it starts off faster and goes higher before falling back to the Earth. If you
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Document Date: 2008-07-14 17:10:07
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Black Holes When you launch a rock up into the air, it slows and is eventually pulled back down by gravity. If you launch it with more force, it starts off faster and goes higher before falling back to the Earth. If you