ThothX Tower
The ThothX Tower is a space launch platform tower design by Canadian aerospace company Thoth Technologies (ThothX). It is not a full space elevator, but a 20-kilometre-tall (12 mi) inflatable tubular tower structure 230 m (750 ft) in diameter, using elevators to transfer up and down to the stratospheric platform where rocket launch vehicles would land, refuel, load, and launch from to reach and return from orbit.