[Roanon]

Originally posted by SB:
What happens if I deploy a minefield around a planet?
When an enemy fleet attacks, will they detonate the mines before engaging in combat, like in a warp point?

Minefields are encountered and dealt with while each individual fleet is moving. Doesn't matter if on warp points, planets, or elsewhere. Combat is after movement - but remember, there are 30 "days" of movement/combat per turn.
BTW, planets ordered to launch mines do this before the first day of movement.