i appreciate any billionaire addition to the human potential club but this is extremely not true. there’s almost nothing of value on the moon and it can’t (practically speaking) be terraformed. given current technology, mars is the only way forward.https://twitter.com/trengriffin/status/1086740028951162881 …
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this was something that worried me too, so i interviewed mckay about it directly. turns out an atmosphere on Mars would last like 100 million years. interview here:https://itunes.apple.com/us/podcast/new-world-5-lets-build-an-ocean/id1123461944?i=1000413536765&mt=2 …
so to be clear: 1) you're right, atmosphere isn't protected from solar wind, and it will slowly erode, but only on a scale of millions of years (which of course doesn't account for human technological progress in that time) 2) an atmosphere will protect humans from radiation
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Even assuming no tech progress, amortization of the cost of replenishment over millions of years should drive even substantial cost towards negligible territory.
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check out the podcast - would love to know what you think!
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