Hi, this is my first post here. I bought the game the other day and have been playing around with it. Right now I'm playing Advent against a TEC AI and doing OK. However, there's an asteroid belt close to the center of the map, making it the chokepoint to fight over. It can't be colonized, of course, but it does have one asteroid with my opponents metal extractor on it (and I need that metal!). When I try to attack it I see the message "Invulnerable" followed by "Can be captured". My question is, captured by what?? I have the Progenitor there chock full of anti-matter with colonize enabled but it wont do anything to it at all. It doesn't have any allegiance so I don't think culture would affect it but who knows? Has anyone else ever come across this and what's the answer -- please?
Thanks in advance. I've enjoyed the reading I've done here so far.