this post was submitted on 01 Mar 2026
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[–] lordnikon@lemmy.world 106 points 1 week ago (54 children)

My question is always how the hell are you going to cool them. Do you know hard it is to move heat in a vacuum?

[–] EndOfLine@lemmy.world 85 points 1 week ago (3 children)

The problems; plural; is that the person who popularized the idea of data centers in space has little to zero understanding of any of the space sciences and yet owns and directs one of the world's largest, and privately owned, aerospace companies with massive government contracts that splits its time with their own AI work.

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[–] credo@lemmy.world 9 points 1 week ago (1 children)

Easy, just create a long heat sink and dangle it in the earth’s atmosphere. Now we are winning!

[–] 0x0@lemmy.zip 2 points 1 week ago

From that to a space elevator...

[–] NotMyOldRedditName@lemmy.world 2 points 1 week ago* (last edited 1 week ago) (1 children)

Raditors. Starlink v3 can in theory already shed (edit 20) kW of heat. But they would need to figure out how to 5x that and keep things profitable.

[–] wewbull@feddit.uk 5 points 1 week ago (1 children)

It would be 20kW for each rack or two. The types of data centre deal they talk about these days are measured in GW of compute. That's 50,000x just for 1GW.

[–] NotMyOldRedditName@lemmy.world 1 points 1 week ago* (last edited 1 week ago)

These aren't big things, they're small satellites. They're going to be ~100kW. They only need to 5x the existing radiator they think will work.

[–] fallaciousBasis@lemmy.world 2 points 1 week ago

How would you power them?

The surface area of solar panels exceeds the surface area needed for radiators to cool everything.

In space I would imagine you'd find the perfect sandwich ratio. One bun solar, one bun radiators, the meat being the racks.

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