Re: describing my star system - about 200 words.
Going up from a single system to a galaxy is rather a big leap (about a billionfold); you could try a stellar cluster as an intermediate stage. (there's a galactic arm after that, too)
Even with a binary system you're going to have problems getting forty inhabitable bodies into the goldilocks zone. Consider our solar system; with intensive terraforming, you could probably get Earth, the moon, Mars and Venus inhabitable. A bigger star might, just might, increase this by one, but to get any more you need to start moving some pretty big real estate. A couple of the asteroids might be big enough, plus a few gas giant moons, but moving these into stable orbits is engineering on a scale that makes me blanche; why not build a ringworld while you're about it.
Or, to go completely over the top (what, me?) if your two stars are similar mass (not likely, most binaries looked at are a giant and a dwarf, just a gas giant a bit oversized) they'll be orbiting their mutual centre of gravity (actually, all binary stars will, but in most cases it's inside the photosphere of the larger star). Now, if we move the stars about until the centre is in the Goldilocked zone, we can arrange our twelve major planets in a double Klemperer rosette around the c of g, not orbiting the stars at all. However, I don't see any way this could come about spontaneously, particularly when I'm intending to put the stars' ecliptics orthogonal to the line between them, so the outer planets are in 'ordinary' orbits round their respective primaries. If ever you find the race who can do cosmic engineering on this scale, have I got a job for them!
Wouldn't be long term stable, but a million years or so, shouldn't get too shaky. Better with a single rosette of six planets.
Otherwise, you could give up planets entirely, except as anchors, and build huge, spinning space stations where the environment can be controlled so your Goldilocksage is no longer critical. Or move the asteroid belt into the Goldizone, accepting these aren't really classifiable as planets, and dome them and have the bulk of your population in microgravity. Or have a 'superjupiter' gas giant planet in the right place, with a whole family of planet-sized moons all about the same distance from their star, if differently spaced round their planet. If you've got "Number of the Beast" technology, collect planets from around thirty different stars, and put them all in the same ball of string orbit round one star (start of a Dyson swarm) (I'll give you a hundred thousand year stability on this one, no more; not enough to evolve intelligence, but stable enough to colonise).
Last edited by chrispenycate; 13th June 2012 at 05:27 PM.