• Thoth Technology devised a tower design using pressurized segments that reach up to 20 kilometers (12.4 miles) into the stratosphere where a platform could be constructed for purposes of communications, tourism or as a launch platform for reaching space. 

  • The most challenging aspect of the space elevator concept is creating a strong, reliable elevator cable 12 miles long. In fact, it's the focus of a space elevator conference taking place later this month.

  • The idea is that astronauts would ascend to 20 km by electrical elevator. From the top of the tower space planes will launch in a single stage to orbit and return to refuel.

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