> ... data centres that won’t have an environmental impact here on Earth.
Really? I wonder how they are going to get them up there without rocket launches?
100 tons is quite a lot of gpus. If they manage to solve such "minor" problems as powering and cooling them they could run for a decade or so without consuming or polluting. The methane burned to get mass into orbit is trivial - a 500MW powerplant burns that much in under a day.
And getting them down. Or allowing them to come down on their own... I doubt that is entirely environmental impact free.