We used to think that planets and their moons would form in the same way OUR solar system formed.... That being, the hot rocky planets closer to the star, and the giant gas planets farther away, but it seems today, that any variation can exist.

If all the planets are (most anyway) are formed from the dust left over from the formation OF the star...

Why wouldn't we see the same dispersion?

In other words....

If physics works the same everywhere... why do we see such a HUGE diversity in the way solar systems are created?