No we should be getting the megatons from asteroids, not from Earth. Rockets should only be transporting humans as soon as possible, way before we start thinking about being multiplanetary. Focus on the root cause. Gravity wells are tough to get out of.https://twitter.com/elonmusk/status/1217986505513172992 …
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lunar city will prolly be a super important space port for any interplanetary commerce (bc gravity well)
why? you would still have to rocket to the moon from earth. for what? a zero gravity vacation and *more* time left exposed to radiation?
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Mars is basically 1/3 g & similar levels of radiation (unless we set up a magnetic shield at mars L1 lagrange pt, which iirc is surprisingly plausible, only needs to be like 2x of a large MRI. Possibly could do something similar at Earth's L1 which might cover moon somewhat)
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depends where the economic center of gravity is; currently & for the foreseeable future will be on earth, but highly doubtful that'll still be the case in 1,000 years
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