An "elevator" to space from the surface of the Earth has to be in geosynchronous orbit in order to have its Earth end stationary over a point on Earth. Is it possible to have an elevator to space from the surface of the Moon? Or does the moon have such a long rotational period (about 28 days, I think) that the elevator would have to be enormously much longer than one from Earth in order to be geostationary (or would that be lunarstationary?) ? How long would a Lunar space elevator have to be?