Neil deGrasse Tyson Explains How Ion Drives Work

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How do Ion Drives work? Find out, as astrophysicist Neil deGrasse Tyson answers a fan's Cosmic Query and explains what ion propulsion is, and how ion drives function differently than chemical rockets. Neil discusses the benefits and drawbacks of each, prompting comic co-host Eugene Mirman to wonder if ion drives can be weaponized?

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