Anyway, if I was going to go mining 3He in space I'd bear in mind it's in the regolith because it's part of the solar wind and gets trapped there. Is it possible to collect it more cheaply using a really huge solar sail (with station-keeping as a side-purpose) made out of a membrane that traps it directly and can be reprocessed to outgas the stuff? That way you're not grinding up gigatons of fucking rock to extract an incredibly rare volatile.
cstross
joined 2 years ago
@gerikson @techtakes Ian is a *very* good writer—but for those books he uncritically adopted the American colonialist ideologues' idea of an good reason for space colonization: and sure, his Lunar colony is a capitalist hellscape, but that's not the point. (The P + 11B aneutronic fusion pathway was already known about at the time.)
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@gerikson @techtakes The thing about Lunar 3He mining is … it presupposes you can build aneutronic fusion reactors (a 3rd generation fusion reactor: not simple!). But if you can fuse 3He, you're almost certainly able to run a P + 11B reactor (which is also an aneutronic reaction), and hydrogen and boron are readily available on Earth. Thereby removing the entire incentive to strip-mine the moon at vast expense.
TLDR: Lunar 3He is a non-working economic justification for space colonization.
@froztbyte @techtakes Speaking as a working writer: she's a hobbyist writer. At this point she's so rich she could spend £100K/week of her capital and still be a multimillionaire when she dies aged 100+. A novel typically takes a year to write and even JKR is unlikely to make significantly more than £100K from a book (unless it gets filmed). So she keeps writing for ego/self-esteem but not from necessity (to stop writing would leave a hole in her life).
@V0ldek You missed maintenance and logistics. Military gear is typically amortized over a 30 year period, so a £3M missile might actually cost something like £0.3M to build then a bit under £100K per year to keep in working order (new batteries and motors, regular inspections and refurb, cost of the leak-proof warehouse it's stored in, etc).
@o7___o7 (Checks …) you may like "A Conventional Boy" (coming next January 7th)? And if I ever get "Ghost Engine" (the space opera) done, that has a happy ending.
@dgerard Moldbug didn't get radicalized at Berkeley in the early 90s but his elder brother was definitely a libertarian back then. Curtis was just chilling with hallucinogens and a room full of giant lizards in his geek house.
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@Soyweiser You're assuming the first Starship to Mars has a cargo of canned primates. Rest assured, it can't and it won't. (Also, I doubt Starship will be ready for Mars—extended duration in space, remember—in time for the 2026 launch window. Although a robot probe as a payload launched atop Starship is entirely possible in that time frame: you don't need reusability, just a bloody big payload bay and the ability to reach orbit once, which Starship achieved as of OFT-3.)