Space Data Centers Feasibility Overestimated

VraserX · x · 2026-07-12

The author argues that while space data centers aren't impossible, Elon's timeline is overly optimistic.

Citing a Google analysis, the text notes that for orbital computing to be competitive, launch prices must drop below $200/kg. Current costs remain at "thousands of dollars/kg," and Google predicts this threshold might only be approached by the mid-2030s.

The author lists major engineering challenges:

Space is a vacuum, making direct air cooling impossible; GPU heat must be dissipated via massive radiators.
Other hurdles include radiation, shielding, massive solar arrays, bandwidth requirements, and hardware failures.
Broken GPUs in ground data centers can be replaced manually, but in-orbit hardware relies on resupply missions or autonomous repair systems that don't currently exist at scale.
Meanwhile, AI hardware iterates rapidly, adding continuous commercial pressure.

Conclusion: Launching a functional space prototype next year is plausible, but it only proves it "can run," not that it's "economically viable." The author estimates that commercial scaling won't happen until the mid-to-late 2030s at the earliest, and the concept currently feels more like investor fantasy.

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Space Data Centers Feasibility Overestimated

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