The planets all lie in nearly the same plane resulting in a disk-like structure for the solar system. This disk-like structure is believed to exist because
A) the solar nebula from which the planets formed had a disk-like structure.
B) the bipolar flow from the young sun cleared all material out of the nebula except that in the disk.
C) Jupiter's gravity was great enough to pull all of the other planets to the plane of its orbit.
D) the Milky Way Galaxy from which the planets condensed has a disk-like structure

Question

Quizplus · Accepted Answer

The most widely accepted explanation for the disk-like structure of the solar system is that it is a result of the solar nebula from which the planets formed having a disk-like structure. As the nebula collapsed, it began to rotate faster and faster, and conservation of angular momentum caused it to flatten into a disk. The planets then formed from this flattened disk of material.

The Planets All Lie in Nearly the Same Plane Resulting