Putting AI in space is a silly idea. How do you cool it reliably? How do you handle rad-hardness? How do you even get the gear up there? It's one of the most expensive places to put mass.

Using geothermal power or floating solar arrays in the ocean makes way more sense. It's much easier to access, you have water for a heat sink, and you're far away from anyone or anything that would really care.

More controversially, if geothermal or solar doesn't pan out, you could power it via nuclear microreactors (just what I want floating in my world's ocean) or gas that would otherwise be flared off from a deep sea oil well (CO2 non-withstanding).

Satellite cooling is long figured out, the problem is that it requires a ton of expensive mass.

Radiation hardening is not a huge issue in LEO either. It is an issue, not the issue.

Overall, it's like choosing international flights as your choice of a restaurant. It's...fundamentally...doable...? But nobody knows why you would want that, unless flying GPUs is the point rather than to offer a competitive service using the server sats.

Someone made a good point on a previous comment like this: the main selling point is the public can’t destroy them

It is expensive, but the radiators won't necessarily push the state of the art. https://arstechnica.com/space/2026/07/how-hard-is-it-to-buil... The current test is to see how big an issue rad-hardness actually is.

Scott Manley has an excellent video breaking down the math on cooling.

It’s totally doable.

https://m.youtube.com/watch?v=FlQYU3m1e80

The fact that this comment is being downvoted says so much about so many things. And so many people. This community--not just HN, I'm talking about tech at large--has totally lost its way.