Data centers in space are a stupid idea. Quantum AI data centers in space are a way stupider one. I have wanted to write this for two years, and an investor's question finally gave me the excuse.
In vacuum, the only way to shed heat is radiation. Starcloud's 5 GW proposal needs 10 square kilometers of radiator, about three times Central Park, plus 16 square kilometers of solar panels. So, in short, for this to work we need a structure with the footprint of half of Manhattan and the weight of a Nimitz-class aircraft carrier - seven times the mass of everything currently in Earth orbit combined, parked in a debris field where fragments arrive at 10 km/s, taking hundreds of debris hits a day, with 69,000 kilograms of pressurized glycol per second flowing through the pipes behind those radiators. At 2025's record launch rate, lifting it would take every rocket on Earth 35 years. Every strike on one of those pipes is a catastrophic rupture, not a leak - and at this size it would be hundreds of them per day. No crew. No repair vehicle exists...
Few people tried to model the costs and optimistically concluded that orbital compute is 3x to 10x terrestrial. They did not consider one tenth of what is really needed - the coolant plumbing, the 350 GPUs a day that fail under training load and cannot be swapped, the deorbiting of 100,000 tonnes, the resonance problem, and many others. Add those and the real cost for the Starcloud's proposed data center could run in trillions of dollars.
And this idea got funded hundreds of millions of dollars?
Then someone proposed putting superconducting quantum computers up there. Millikelvin cryostats. Helium-3 from weapons stockpiles (500 fridges would eat two thirds of world supply). Daily calibration by people who cannot reach the hardware. Cosmic rays that crash error correction chip-wide. For a quantum AI advantage nobody has demonstrated on any commercial workload.
Hyperscale orbital data centers are decades away, if ever. Nobody pitching quantum AI in orbit has solved a single one of the three problems it stacks. They are counting on the VCs not to ask and to be sufficiently impressed with the concentration of buzzwords.
https://postquantum.com/quantum-computing/quantum-ai-data-centers-space/
#QuantumComputing #DataCenters #SpaceTech #QuantumAI #VentureCapital
