His next project should be DeadHorse. 
Anyway, as far as the multiple planets go, there's a few ways to fudge that in a Space Opera. One way is just to finesse the laws of physics; in Star Trek, asteroids and moons tended to have Earth-normal gravity (as did planets, which also should have varied somewhat). As long as the rules are internally consistent, I don't care about that. I have a better idea, though. The size of a star's Goldilocks Zone is dependent on its size, so we could just postulate a supermassive star with a proportionately large GZ and an "asteroid belt" of Earth-sized objects-- or at least with a generous helping of Earth-sized objects. It's pretty unlikely in real life, but then so is something like Niven's Smoke Ring; the important thing is that it creates a nice playground for telling stories.

Anyway, as far as the multiple planets go, there's a few ways to fudge that in a Space Opera. One way is just to finesse the laws of physics; in Star Trek, asteroids and moons tended to have Earth-normal gravity (as did planets, which also should have varied somewhat). As long as the rules are internally consistent, I don't care about that. I have a better idea, though. The size of a star's Goldilocks Zone is dependent on its size, so we could just postulate a supermassive star with a proportionately large GZ and an "asteroid belt" of Earth-sized objects-- or at least with a generous helping of Earth-sized objects. It's pretty unlikely in real life, but then so is something like Niven's Smoke Ring; the important thing is that it creates a nice playground for telling stories.