Solo KHs encounter?

In Star Fleet Battles there were some solo encounters : planet crusher and space ameba IIRC, they operated by a set of automatic rules and dice rolls. <div><br /></div><div>Next issue of FE is ships themed and I was brainstorming ideas: </div><div><br /></div><div>1. Create a similar &quot;space monster&quot; ?</div><div><br /></div><div>2. Convert a Star Trek one?</div><div><br /></div><div>With the planet crusher the SFB player has to keep it from a populated planet. </div><div><br /></div><div>Not to exciting but one plausible &quot;space monster&quot; is a comet is on track to slam into a populated planet. But it has broken up so that its a cloud of large chunks and all the chunks must be stopped. </div>