this post was submitted on 15 Dec 2023
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And who’s paying to put all those gazillion bazillions of cubic tonnes of radiation shielding into space?
Not trying to defend Jeff here, but generally these kind of space megaprojects rely on manufacturing materials in space. I.e. capture an asteroid and use its material as the radiation shielding. Not that that's currently anywhere near feasible ¯\_(ツ)_/¯
Yeah I read lots of sci-fi as a kid too. We’d be there by now except physics is a cruel and unyielding mistress.