Space is not cold. Space is not hot either. Temperature is a property of matter. Empty space does not have a temperature. It is also a perfect insulator for conduction and convection, and as for radiation: it's a problem because of the sun heating up objects via its radiation.

This is the basics, I'm not an expert. But I don't think that you have anything useful at all to say here.

Repeating the word "superconductor" does not convince anyone of anything.