[Taqwus]

1. Same square as the star.
2. The bases are consumed. But because of (1), bases being immobile, and stars not stacking (IIRC), no great loss. You'd just scrap 'em anyway to not pay maintenance.

Yup. Bring, oh, 11 spaceyard ships to the sun and start building...

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-- The thing that goes bump in the night