[Asmodean]

So I think I am on the way to mastering this game. It is a great, IMHO, but one thing still puzzles me:

How do I utilize Space Bases. I haven't actually built one yet, for fear of doing something wrong, thereby wasting rescources.

I guess these are my questions:

1) Space bases can't move, right? Once they are built, they stay in place?
2) can anybody give me some ideas for space base designs, and how to best utilize them?
3) Generally, what are they good for, except defense and late game ring/sphere world building?

Asmodean