Starcloud can’t put a data centre in space at $8.2M in one Starship

You need less batteries in orbit than on the ground since you're only in shade for at most like 40 minutes. And it's all far more predictable.

Cooling isn't actually any more difficult than on Earth. You use large radiators and radiate to deep space. The radiators are much smaller than the solar arrays. "Oh but thermos bottles--" thermos bottles use a very low emissivity coating. Space radiators use a high emissivity coating. Literally every satellite manages to deal with heat rejection just fine, and with radiators (if needed) much smaller than the solar arrays.

Latency is potentially an issue if in a high orbit, but in LEO can be very small.

Equipment upgrades and maintenance is impossible? Literally, what is ISS, where this is done all the time?

Radiation shielding isn't free, but it's not necessarily that expensive either.

Orbital maintainence is not a serious problem with low cost launch.

The upside is effectively unlimited energy. No other place can give you terawatts of power. At that scale, this can be cheaper than terrestrially.

> The radiators are much smaller than the solar arrays.

Modern solar panels are way more efficient than the ancient ones in ISS, at least 10x. The cooling radiators are smaller than solar panels because they are stacked and therefore effectively 5x efficient.

Unless there are at least 2x performance improvements on the cooling system, the cooling system would have to be larger than solar panels in a modern deployment.

This is false. It’s pretty straightforward to prove using Stefan-Boltzmann. Radiating from both sides at 300K, a square radiator that’s 1 meter on a side emits 920W.

Additionally, you wouldn’t use cutting edge 35% triple junction cells for a space datacenter, you’d use silicon cells like Starlink and ISS use. 22% efficient with 90% full factor, given 1350W/m^2 and thus 270W/m^2, to provide enough power for that radiator you’d need a solar panel 3.4 times as big, and that’s if you were in 24/7 sunshine. If you’re in a low orbit that’s obscured almost half the time, it’s 6-7 times as big.

Why do people keep making these obviously wrong claims when a paragraph of arithmetic shows they’re wrong? Do the math.