this post was submitted on 01 Jul 2026
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[–] teft@piefed.social 220 points 3 weeks ago (3 children)

Anybody Who Thinks Orbital Data Centers are a Good Idea ~~Is Suffering from AI Psychosis, Experts Argue~~ Doesn't Understand Basic Physics

[–] billwashere@lemmy.world 164 points 3 weeks ago* (last edited 3 weeks ago) (26 children)

Two main problems with data centers. Power and cooling. In space the power is doable. The cooling is a major pain in the ass and always has been. There are only three ways to get rid of heat. Conduction, convection, and radiation. The first two don’t work because of the vacuum thing. The third is horribly inefficient. Just look at the ISS and the giant fins that only dumps about 70 kW of waste heat through radiator “wings” that weigh several tons. A single rack in a high density compute rack can generate 100kW by itself.

So yeah given the expensive and how inefficient it is, it’s a terrible idea.

Edit: I’m a system architect so dealing with data center heat is something I’m familiar with.

[–] Diplomjodler3@lemmy.world 72 points 3 weeks ago (2 children)

You're just too small minded to comprehend the grand vision of business genius™ Elon Musk!

[–] billwashere@lemmy.world 51 points 3 weeks ago

And Bezos apparently…

https://www.marketwatch.com/story/bezos-says-the-only-thing-holding-back-orbital-data-centers-is-cost-not-science-as-he-says-ai-will-create-jobs-fc49d5d5

These chucklefucks are just trying to get some sucker… er I mean investor to fund the whole thing so their respective space companies can do the job.

And after doing to some very cursorary research other issues like…

  • Radiation and reliability - apparently cosmic radiation is a bitch
  • Lifecycle costs - I should have thought about this one. It's not like when a drive dies in space you just drive down to the DC to replace it. And not mention we recycle out compute about every 5-6 years or so.
  • Connection - somebody mention this already in the thread but yeah you ain't hanging a fiber cable to a satellite
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[–] chaogomu@lemmy.world 42 points 3 weeks ago (7 children)

There's also the very real problem of data transfer.

On land you just lay down another fiber optic cable and you can double your data transfer rate.

In space, you have to deal with cross talk and interference on a limited spectrum.

[–] Womble@piefed.world 21 points 3 weeks ago (2 children)

Free space laser communications are possible, but even then you are only talking about 10s of GB/s, and you cant add more lasers or receivers on a satellite already in orbit.

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[–] RogueBanana@piefed.zip 16 points 3 weeks ago

What if we run a really long tube down to earth to send water back and forth? You gotta think like Elon to be innovative.

[–] CheeseNoodle@lemmy.world 15 points 3 weeks ago (3 children)

iirc the power is not very doable, You'd need hundreds of times as many solar pannels as are on the ISS to power a single modest data centre.

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[–] Draegur@lemmy.zip 63 points 3 weeks ago (1 children)

Space being "cold" doesn't matter since vacuum INSULATES.

it's not even cold...! The matter that DOES exist in it is very hot plasma but it's just really thinly spread out.

[–] dylanmorgan@slrpnk.net 34 points 3 weeks ago (8 children)

This is what I’ve been tearing my hair out over any time this comes up. If you put a computer in space it will heat up until it achieves incandescence. Which is bad for the performance.

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[–] snooggums@piefed.world 54 points 3 weeks ago (1 children)

Orbital data centers are a good idea if one wants to get massive golden parachutes that siphon money from all the investor cash that the entirely u realistic promises brings in. They are a grift that will most likely benefit Musk in the same way all his other pie int he sky bullshit does.

Being technically terrible hasn't really stopped that from happening with his other bullshit projects.

[–] Draegur@lemmy.zip 19 points 3 weeks ago

Orbital data centers are the new "hyperloop"

[–] kerrigan778@lemmy.blahaj.zone 44 points 3 weeks ago (8 children)

It's literally just taking the piss out of idiotic investors. Data Centers, AI, space, new frontier, new markets. It checks all the boxes to get idiots excited to dump money into your tech company so people keep talking about it because talking about it is what gets results. Hopefully nobody is dumb enough to actually try it, it's an absolute scam.

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[–] kevinsky@feddit.nl 38 points 3 weeks ago* (last edited 3 weeks ago) (50 children)

I don't know how that even got past the brainfart stage. AFAIK nobody has actually demonstrated how that would really work.

  • Despite SpaceX's advancements in regards to things like resutable rockets, shooting stuff into space is still prohibitively expensive.
  • Server clusters are exceptionally heavy.
  • Server clusters run hot, cooling is not a triviality considering you can't just rely on convection in space, so more mass for alternative solutions.
  • Datacenters need regular maintenace.
  • Logic boards won't do well with the radiation in space.
  • Despite SpaceX's advancements in regards to things like sattelite internet, getting large datacenter level quantities of data from earth into space and back, and at low latency, is no triviality.

Not saying this won't ever be a thing. But not in the lifetime of anybody on earth right now I don't think.

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[–] jaykrown@lemmy.world 38 points 3 weeks ago (1 children)

Yea honestly, orbital data centers are the dumbest shit I've heard during this bubble, and a huge indication of peak bubble hype.

[–] muhyb@programming.dev 19 points 3 weeks ago

The bubble is like this at this point:

[–] rumba@lemmy.zip 36 points 3 weeks ago (4 children)

You could put em on the moon with a heatpump into the ground.

The cost per pound to get them there is insane.

They are seriously old in 2 years.

They could put them in deserts here with closed loop cooling.

or... hear me out... Maybe we DON'T NEED THAT MUCH AI....

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[–] qaz@lemmy.world 32 points 3 weeks ago* (last edited 3 weeks ago) (2 children)

I had a conversation with a colleague of mine about this. He believed that Musk's decision to merge xAI and SpaceX was truly because of the potential of datacenters in space. I was unable to convince him that the logistics of this would be a nightmare and that this was just a way to make the Twitter buyout SpaceX's problem.

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[–] nexguy@lemmy.world 30 points 3 weeks ago (5 children)

Are there actually people who think this is a good idea that are not in a position to make money off it?

[–] Diplomjodler3@lemmy.world 18 points 3 weeks ago (1 children)

Yes. All the retail investors in SpaceX that will be left to hold the bag.

[–] minfapper@piefed.social 17 points 3 weeks ago (1 children)

That's a funny way to spell "our 401k"s.

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[–] shirro@aussie.zone 26 points 3 weeks ago (2 children)

The "good idea" isn't the data centers but the stock pumping. You propose something insanely difficult and expensive (also hopelessly impractical and stupid in this case) and because it is so difficult and expensive you claim you can monopolize the market if you succeed which is the ultimate dream of every capitalist but you just need some insane amount of investment to get there. Then when the money runs out you go back and ask for more and exploit sunk cost fallacy. All the while valuations increasing. It is an amazing way for already rich scammers to get much, much richer than could happen in a sane economy and slurp up huge amounts of capital that otherwise could have gone into more productive endeavors.

Obviously in any well regulated economic system this shit would be subject to some proper oversight to protect the interests of the majority, particularly all the people whose pensions and livelihoods are at risk when this all goes to shit.

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[–] Linktank@lemmy.today 25 points 3 weeks ago (1 children)

They want to put them where normal people cannot damage them.

[–] LodeMike@lemmy.today 18 points 3 weeks ago (2 children)

It's so expensive. Putting data centers in bunkers or caves is more reasonable. (There actually are data centers like this).

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[–] impairedimperator@lemmy.zip 23 points 3 weeks ago* (last edited 3 weeks ago) (4 children)

Could you imagine being in orbit during an AI datacenter kessler collapse, and just getting smoked by an rtx 5070 travelling at mach fuck?

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[–] uriel238@lemmy.blahaj.zone 23 points 3 weeks ago* (last edited 3 weeks ago) (30 children)

And yet the IPO of SpaceX was justified with the presumed future success of its space-based data center program.

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[–] stoly@lemmy.world 22 points 3 weeks ago (9 children)

LOL LOL you CANNOT cool something like that in space. The entire concept is flawed.

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[–] Rakonat@lemmy.world 21 points 2 weeks ago (1 children)

It's such a hilariously dumb idea I hope the tech bros sink millions into it.

Lets make a data center we can't maintain, upgrade or access for any practical reason. Waiting for the suggestions to put them in geostationary orbits so that way their latency is even higher but going to struggle staying powered when in Earth's shadow. Or get put in the Earth-Sun L1 so they always have solar power but now have to have significant more radiators on top of even MORE latency beyond beyond the moon's orbit.

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[–] Warehouse@piefed.ca 21 points 3 weeks ago* (last edited 1 week ago)

For the cost of one orbital data centre, you could probably build 10 terrestrial data centres, bribe literally everyone involved in the construction to pretend that they built it in space, buy an island, fake your death, and spend the rest of your life off-grid.

[–] Tollana1234567@lemmy.today 20 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

as much as underwater datacenter, extremely high cost despite the ocean being able to cooldown datacenters fast. also these large LLM have never overcome one major flaw, There is no profit generation in the industry.

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[–] HumbleExaggeration@feddit.org 20 points 3 weeks ago (1 children)

If you sell rockets and satellites, then data centers in space sound like a perfect idea to increase demand with other people's money.

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[–] nevyn@slrpnk.net 19 points 3 weeks ago (7 children)

Orbital politicians, and billionaires are a hella cool idea though

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[–] BottleBoardBakon@lemmy.ml 18 points 3 weeks ago

Eliminating heat is like one of the hardest space problems 🦙

[–] echodot@feddit.uk 17 points 3 weeks ago (3 children)

Not just experts but an 11-year-old with a mild interest in space could have explained to these techbros why this wouldn't work as an idea.

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[–] DisasterTransport@startrek.website 16 points 3 weeks ago (1 children)

If and only if someone is insane enough to develop off-planet manufacturing with the bulk of the raw materials originating from somewhere in deep space, e.g. asteroid mining, putting data centers in space might be useful for problems that demand intensive compute and can work with extreme latency.

Then again that's like saying inventing the airplane would have been a good strategy for Neanderthals to find better firewood.

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[–] IsoKiero@sopuli.xyz 15 points 3 weeks ago (1 children)

I've been working on IT for quite a while now and the only certain thing on this business is that hardware breaks down. All of it. Only questions are 'when' and 'how'. I'm pretty sure you can't get NBD support to the orbit. And I'd guess that shaking the shit out of the hardware during launch won't really help.

And that's of course just a minor detail, the whole idea is so stupid on a very fundamental level that I don't know why it's even a news worthy.

[–] Jax@sh.itjust.works 13 points 3 weeks ago (3 children)

Lots of radiation in space. Computers classically do not do well with radiation.

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[–] cecinestpasunecommunication@lemmy.dbzer0.com 14 points 2 weeks ago (2 children)

It makes sense if we have a space elevator and also invert the way most of the physics of data centers work.

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[–] xthexder@l.sw0.com 13 points 3 weeks ago (6 children)

The advantage of datacenters in space is that the peasants can't break in and sabotage your equipment. Only a very small set of nations would have the capability of blowing it up or somehow jamming its communications.

It literally only makes sense if you're a billionaire worried about the growing unpopularity of your AI datacenters, or you're using it for war and don't want it easily bombed...

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