tell me again why ai datacenters in space make no sense

Cosmic rays, launch costs, relative impossibility of maintenance, difficulty of heat dispersal, added latency, interconnect interference, no way to recycle when decommissioning.

Or we could build a power line.

Along with lack of cooling, the cost to launch hardware means that "servers in space" can never recover startup costs.

Heat rejection.

It would blot out the sky, ~30,000 acres per Gigawatt