Some of the moons of Jupiter, Saturn, and other planets are believed to have formed from a similar protolunar disk, and our own solar system was formed by such a disk, and is the reason the planets are arranged in an ecliptic plane.
Some of the moons of Jupiter, Saturn, and other planets are believed to have formed from a similar protolunar disk. Our own solar system was formed by such a disk. Our own solar system is the reason. The planets are arranged in an ecliptic plane the reason.