Which planetary fact(s) is(are) explained by the solar nebula theory?
A) The orbits are all approximately in the same plane
B) The orbits are all in the same direction
C) Jovian planets are mostly H and He
D) Terrestrial planets are mostly rock and iron
E) All of the above

Question

Quizplus · Accepted Answer

The solar nebula theory explains all of these planetary facts. The formation of a disk-shaped solar nebula would have caused the planets to form in a flat plane and in the same direction. Additionally, the composition of the planets would have been determined by the location in the solar nebula where they formed, with the inner planets being mostly rock and iron while the outer, Jovian planets are mostly composed of hydrogen and helium.

Which Planetary Fact(s) Is(are) Explained by the Solar Nebula Theory