What's Ahead in Aerospace: NASA: Tethers could provide 90 percent of the speed needed for interplanetary trips
TETHERS: A momentum-exchange space tether system, which would spin payloads like a yo-yo at the end of a string before releasing them, could provide 90 percent of the speed necessary to send a spacecraft to another planet, according to Paul Wercinski, program executive for the In-Space Propulsion...
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