Comment Re:Cooling (Score 5, Interesting) 64
Yes and yes.
https://hackaday.com/2025/06/1...
"This is where skepticism creeps in. After all, cooling is the greatest challenge with high performance computing hardware here on earth, and heat rejection is the great constraint of space operations. The âoeicy blackness of spaceâ you see in popular culture is as realistic as warp drive; space is a thermos, and shedding heat is no trivial issue. It is also, from an engineering perspective, not a complex issue. Weâ(TM)ve been cooling spacecraft and satellites using radiators to shed heat via infrared emission for decades now. Itâ(TM)s pretty easy to calculate that if you have X watts of heat to reject at Y degrees, you will need a radiator of area Z. The Stephan-Boltzmann Law isnâ(TM)t exactly rocket science."
Devil will be in the details for how much cooling capacity is needed to reject the heat generated by the GPUs, how long the satellites are designed to last, stationkeeping, etc.
The current trend is toward smaller, disposable satellites, so I don't know if what Bezos is envisioning is a massive distributed cluster of smaller satellites, or a return to larger satellites that are docked to a compute pod payload...
I mean, this could be one possible proposal for keeping the ISS - jettison most everything but the solar panels and radiators, and add station keeping and a compute payload module. Keep the cupola, canada arm, docking capability for tourist and maintenance visits.