[Alneyan]

You cannot mine a colonized world, but uncolonized planets are fine as far as remote mining is concerned. If there was an uncolonized planet in this sector (such as a moon), the remote miners would be working on this uncolonized planet, leaving the colonized planets alone.

In short, you cannot both use planetary based facilities and remote mining from deep space, and if you intend to play a remote-mining race only (that is to say, Nomads or Pirates), you should keep these pesky colony ships far away from your remote mining ships/bases.