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A space elevator is a proposed structure designed to transport material from a celestial body's surface into space. Many variants have been proposed, all of which involve traveling along a fixed structure instead of using rocket powered space launch. The concept most often refers to a structure that reaches from the surface of the Earth on or near the Equator to geostationary orbit (GSO) and a counter-mass beyond...
»»» http://en.wikipedia.org/wiki/Space_elevator
The Vision
Climbers ascend a ribbon, 100,000 km long, strung between an anchor on Earth and a counterweight in space. Connecting Earth and space in a way never before possible, the space elevator will enable us to inexpensively and completely expand our society into space.
Beyond Earth, space elevators on the moon and Mars open new economic opportunities and expand humanity's reach ever so slightly into the solar system...
»»» http://www.spaceelevator.com/
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