New study suggests that a lunar space elevator could be built for about $1 billion using existing technology.
Since the dawn of the space era more than six decades ago, there’s been just one way to get to the moon and back: rockets. But a pair of graduate students say we should now be able to ferry humans and cargo between Earth and our natural satellite via a sort of high-tech elevator.
, the students contend that it’s technologically and financially feasible to build such a"lunar space elevator," which was first described by the spaceflight scientist Friedrich Zander in unpublished notes from 1910. As explained in the paper, the simplest version of the Spaceline cable might be barely thicker than the lead in a pencil and might weigh about 88,000 pounds — within the payload capacity of a next-generation NASA or SpaceX rocket. It could be made from Kevlar or other existing materials rather than the exotic and hard-to-make carbon-based materials that have long been seen as the key to building a classical space elevator.
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