I'm sure they would need something rad-hard for the system to last any practical amount of time. My guess is that Nokia would likely subcontract some of the ele

I'm sure they would need something rad-hard for the system to last any practical amount of time. My guess is that Nokia would likely subcontract some of the electronics to companies that have experience in making rad-hard versions of existing technologies like BAE Systems or 3d Plus. Thermal management is definitely hard, but this would be pretty run-of-the-mill thermal management for most space companies. I know this still means expensive but it's not an extreme thermal challenge like the Parker Solar Probe (keep things normal temps in a REALLY hot environment) or JWST (keep a very large structure at a VERY cold temperature)