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delectitoday at 6:38 PM1 replyview on HN

Yeah, launch costs alone make it infeasible, and power being "free" exacerbates the cost (gotta get all those panels up there). Cooling is also dramatically harder, plus shielding, and it makes repair/upgrade basically impossible.

I'm not going to assert that large scale space compute will never happen, but I feel confident saying it won't happen this decade or next.


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JumpCrisscrosstoday at 9:00 PM

> launch costs alone make it infeasible

Last time I did the math, launch costs were well balanced against permitting delays (mediated by interest rates). The break even rests almost entirely on radiator mass efficiency (which is, admittedly, a function of launch costs).

Like, if everyone’s terrestrial datacenter projects start getting blocked, and demand for AI continues, the price a rational buyer would pay for in-orbit compute could get ridiculous enough to break even on current kit. And current kit in launch vehicles, radiators and solar panels is advancing.

I don’t think the thesis is met yet. But it’s less ridiculous than I thought it was before I sat down with pen and paper.