Comments on: Drum rolled Carbon fiber tethers five times stronger than Kevlar and Mach 8 spaceplane can place payloads into orbit at super low cost https://lifeboat.com/blog/2016/10/drum-rolled-carbon-fiber-tethers-five-times-stronger-than-kevlar-and-mach-8-spaceplane-can-place-payloads-into-orbit-at-super-low-cost Safeguarding Humanity Sun, 04 Jun 2017 16:24:16 +0000 hourly 1 https://wordpress.org/?v=6.6.2