# A space elevator is a proposed structure design to transport material from a celestial body's surface into space.Many variants have been proposed,all of which involve travelling along a fixed structure instead of using rocket powered space launch.
# The concept most oftens 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.Current materials technology does not permit these kinds of strucures to be practical,although advanced carbon nanotubes could,in principle,have the strength necessary to permit this.
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