Jeff Grayson, co-founder and chief technologist of Electric Sky and board chairman of the Tau Zero Foundation, dives into various advanced space propulsion technologies with Rod Pyle and Tariq Malik on 'This Week in Space.'

Watch the full episode: https://twit.tv/shows/this-week-in-space/episodes/60

Hosts: Rod Pyle and Tariq Malik

Guest: Jeff Greason

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