What is Space elevator?
A '''space elevator''' is a theoretical transportation device for cheaply sending people and cargo into orbit. If one can be built, a space elevator would make it possible to go to [[outer space]] without inefficient and often single use [[rocket]]s, lowering the average cost to launch from the current average of $10,000 to $25,000 per kilogram to as little as $100 per kilo, thus making widespread civilian space travel and colonization economically feasible. The elevator would consist of a [[cable]] or [[tower]] stretching to a mid or [[geostationary]] orbit, with two tethers, one at the surface and the other at a [[space station]]. Some kind of climbing vehicle would go up and down it. No known [[building material]] is strong enough and with a low enough density to build a space elevator, but a material like [[carbon nanotube]]s could be it. [[Category:Elevators]] {{tech-stub}} {{Emerging technologies}}