You’re assuming they would think and behave like humans. I’m thinking of non human super intelligence without a need of most of what keeps us alive and without time constraints placed on us combined with an ability to reproduce themselves.
They don’t even have to worry about G loading during rocket launches. Solar power works fine out to a certain distance in space. The moon is covered with helium 3 and titanium oxide, and other metals.
Or send the ecofreaks up there!