Hejhej!
- It's not possible to place a starbase in the exact middle of an asteroid belt or cloud. The red-cross-cursor isn't captured on tn in-game screenshot, but you notice the missing circle around the end of the line.
- Why are two of these asteroird written in white? I think that maybe the AI had allready built extractors on those. I didn't explore the planet afterwards, so maybe it just doesn't show which opponent (color) built there.

- When you keep a starbase constructor selected after giving it the order build a starbase it gets deselected of course when contructions starts and the ship is consumed. Is it possible then to auto-select the starbase?
Thanks and greetings!
Bravenue