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SpaceX's AI Satellites: Liquid Cooling in Orbit
10 Jun
Summary
- SpaceX plans liquid cooling for orbiting AI data centers.
- Satellites will use a deployable liquid radiator system.
- Ammonia is a likely coolant, similar to ISS systems.
SpaceX is advancing its vision for orbital data centers, with CEO Elon Musk detailing plans for the AI satellite.
Version 1 of these AI satellites, estimated to be around 70 meters, will feature a significant 110-square-meter deployable liquid radiator system to dissipate heat from powerful GPUs.
Experts suggest ammonia will be used as the coolant, similar to the International Space Station's system, due to its suitable freezing and boiling points for space environments.
Musk has indicated that the technology for these AI satellites draws from existing SpaceX Starlink V3 satellite development, asserting they are simpler in design.
However, concerns exist regarding the complexity, potential failure rates, and the environmental impact of de-orbiting satellites containing toxic ammonia, especially with plans for up to 1 million units.
SpaceX aims to begin with a smaller deployment as FCC approval is still pending, while also arguing orbital data centers offer environmental advantages over ground-based facilities.
