"For a long time, roboticists have used DC [direct current] motors to make robots move," says Mike Tolley at the University of California San Diego.
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This article originally appeared on Engadget at https://www.engadget.com/science/space/the-astronaut-whose-illness-forced-an-early-return-from-the-iss-was-mike-fincke-163752239.html?src=rss
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