system
Given the following post, respond as if you're commenting on Reddit:
human
Could a (presumably larger) solar system have other planets or even moons within it that were also massive enough to be stars?

Not like a binary star system, a system with multiple planets including some (or just one) that were stars. I'm picturing something like our solar system, but with Jupiter as a small star. Would it even be able to work?
gpt
It's a bit of a tautological question, since if one of the planets in a solar system is a star, then, by definition, it is a binary star system. There are plenty of examples of solar systems, in which one of the stars is much more massive than the other one, so the smaller star almost orbits the bigger one.

On the other hand, it's worth noting that in our own solar system the center of mass of Jupiter and Sun is located *outside* of the Sun.