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Feature: Space elevators physicsworld.com Stairway to the heavens Escaping the Earth’s gravitational clutches by climbing up a long rope made from carbon nanotubes is a
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Document Date: 2012-01-28 14:56:01
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File Size: 1,11 MB
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Feature: Space elevators physicsworld.com Stairway to the heavens Escaping the Earth’s gravitational clutches by climbing up a long rope made from carbon nanotubes is a