Space Elevator - megastructure concept

Space elevator made from Carbon nanotubes

The Space Elevator will reduce the cost of getting from earth to space. It will also allow us to take very large payloads into space very easily, very safely. Because of that, we can build cities on the moon. We can build space stations. We can build large solar arrays in space to collect energy from the sun and beam it down to earth.

Every revolutionary idea seems to evoke three stages of reaction. They may be summed up by the more... phrases: (1) It's completely impossible. (2) It's possible, but it's not worth doing. (3) I said it was a good idea all along. -Arthur C. Clarke