[haspok]

> There is probably plenty of scope to optimize space radiators. It was never a priority until now and is "just" an engineering problem.

It's a physics problem, as others pointed out, but even if we take it as another "just an engineering problem", have a look at the Hyperloop. Which is similarly just a long vacuum tube, and inside is like an air hockey table, not that big a deal, right?...

[mike_hearn]

Musk's companies never tried to make the hyperloop, they never even started on it. SpaceX is a bit different.

[diabllicseagull]

so spacex worked on an orbital data center?