A lunar space elevator (also called a moonstalk) is a proposed cable running from the surface of the Moon into space.
It is similar in concept to the better known Earth space elevator idea (a cable suspended above Earth, with its center of gravity in geostationary orbit).
It would instead be constructed with its center of gravity in a stationary position above the surface of the Moon, providing a controlled means to transport people and/or materials between the surface and lunar orbit. A lunar elevator could massively reduce the costs for reliably and cheaply soft-landing equipment on the lunar surface.
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