2.5 Admins 2.5 Admins 295: Orbital Meltdown
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Apr 16, 2026 They debate the impracticality of putting data centers in orbit, from cooling limits to launch mass and space debris. They dig into radiation effects, latency tradeoffs, and reliability concerns for satellites. They discuss Google’s patent for AI-generated website summaries and the risks of hallucination and monetization. They answer whether old Dell R710/R720 servers can run Debian and ZFS and suggest HBA options.
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Space Data Centers Fail On Fundamental Cooling Limits
- Orbital data centers face a fatal cooling problem because space requires radiative cooling rather than efficient convection.
- Jim Salter and Allan Jude explain radiators must avoid sunlight, need heavy metal fins and pumped liquid, making launches costly and impractical.
Radiator Mass Kills The Launch Economics
- Radiators for orbital compute are heavy and non-deployable, unlike lightweight rollout solar panels.
- Allan Jude notes radiator fins and pumped coolant add mass that makes large orbital cooling arrays prohibitively expensive to launch.
More Space Data Centers Means More Debris And Sky Pollution
- Orbital data centers would worsen space junk and night-sky visibility while many satellites naturally decay and burn up.
- Jim Salter warns abandoned or failed commercial payloads would increase debris and potentially re-enter as toxic fragments.
