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space elevator
Canadian Company Has Patented 9-Mile Tall Space Tower
Last month, the blueprint for such a tower was finally patented by Thoth, a Canadian tech company. The tower would be 9 miles tall—12 miles above sea-level at the tip when built on a 3-mile high mountain—comprising of torus-shaped gas-cells stacked on top of each other, all held together by a Kevlar frame.
