A space elevator that goes all the way from the surface of the Earth to orbit would be very hard to build on Earth because Earth's gravity well is so deep - tho

A space elevator that goes all the way from the surface of the Earth to orbit would be very hard to build on Earth because Earth's gravity well is so deep - though it's pretty easy on the Moon. Something more feasible would be a Skyhook[1] which only provides part of the energy needed to get to space but which due to the exponential nature of the rocket equation could make a huge difference while being conceivable to build. [1]https://en.wikipedia.org/wiki/Skyhook_(structure) https://en.wikipedia.org/wiki/Skyhook_(structure)