CAN I PUSH THE BUTTON? A Lunar Space Elevator Is Actually Feasible & Inexpensive, Scientists Find. “After doing the math, the researchers estimated that the simplest version of the lunar elevator would be a cable thinner than a pencil and weigh about 88,000 pounds, which is within the payload capacity of the next-generation NASA or SpaceX rocket. The whole project may cost a few billion dollars, which is ‘within the whim of one particularly motivated billionaire,’ said Penoyre.”