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How do you cool the data center in space cost effectively? Unfortunately in space there isn't a lot of material (air) to transfer the heat.

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You can just use ordinary radiators. Do the calculations, cooling isn't the problem it's made out to be.

It's the size of the radiators and the expense of getting them up into orbit (along with maintenance)

Most of my assumptions come from discussions like: https://news.ycombinator.com/item?id=46876105

(1) these are not ordinary radiators because ordinary radiators aren't gold plated and don't unfold dramatically from compact shipping sizes (2) It's absolutely loads of radiators

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