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[return to "Data centers in space makes no sense"]
1. beloch+kK[view] [source] 2026-02-03 23:33:46
>>ajyoon+(OP)
I would not assume cooling has been worked out.

Space is a vacuum. i.e. The lack-of-a-thing that makes a thermos great at keeping your drink hot. A satellite is, if nothing else, a fantastic thermos. A data center in space would necessarily rely completely on cooling by radiation, unlike a terrestrial data center that can make use of convection and conduction. You can't just pipe heat out into the atmosphere or build a heat exchanger. You can't exchange heat with vacuum. You can only radiate heat into it.

Heat is going to limit the compute that can be done in a satellite data centre and radiative cooling solutions are going to massively increase weight. It makes far more sense to build data centers in the arctic.

Musk is up to something here. This could be another hyperloop (i.e. A distracting promise meant to sabotage competition). It could be a legal dodge. It could be a power grab. What it will not be is a useful source of computing power. Anyone who takes this venture seriously is probably going to be burned.

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2. atleas+qL[view] [source] 2026-02-03 23:39:06
>>beloch+kK
Its very simple, xAI needs money to win the AI race, so best option is to attach to Elon’s moneybank (spacex) to get cash without dilution
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3. iknows+jT[view] [source] 2026-02-04 00:23:28
>>atleas+qL
Remember how he argued for Tesla’s Solarcity acquisition because solar roofs?

Data centers in space are the same kind of justification imo.

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4. Mobius+lU[view] [source] 2026-02-04 00:30:03
>>iknows+jT
Solar roofs are much more practical to be honest.
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5. unders+Zb1[view] [source] 2026-02-04 02:30:09
>>Mobius+lU
Putting solar roofs on a building? For a car company?
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6. Mobius+ho1[view] [source] 2026-02-04 04:25:30
>>unders+Zb1
In comparison to datacenters in space yes. Solar roofs are already a profitable business, just not likely to be high growth. Datacenters in space are unlikely to ever make financial sense, and even if they did, they are very unlikely to show high growth due to continuing ongoing high capital expenses inherent in the model.
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7. ben_w+vw2[view] [source] 2026-02-04 13:53:52
>>Mobius+ho1
I think a better critique of space-based data centres is not that they never become high growth, it's just that when they do it implies the economy is radically different from the one we live in to the degree that all our current ideas about wealth and nations and ownership and morality and crime & punishment seem quaint and out-dated.

The "put 500 to 1000 TW/year of AI satellites into deep space" for example, that's as far ahead of the entire planet Earth today as the entire planet Earth today is from specifically just Europe right after the fall of Rome. Multiplicatively, not additively.

There's no reason to expect any current business (or nation, or any given asset) to survive that kind of transition intact.

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