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For more on O'Neill, check out @LeapingRobot's The #Visioneers or this @99piorg episode: https://t.co/wQYTm2nq6F
For more on the #cryotron, I recommend @dcbrock's @IEEESpectrum article: https://t.co/Tbr7mgWdlx
#histSTM #electronics #SpaceColonies