Which physical parameter more than any other most probably controlled the early evolution of the planetary system and dictated the characteristics of the planets that eventually formed?
A) the mix of chemical constituents
B) overall rotation of the nebula
C) temperature distribution in the nebula
D) the density of hydrogen gas in the nebula

Question

Quizplus · Accepted Answer

The temperature distribution in the nebula played a crucial role in the early evolution of the planetary system. It controlled the location of the snow line and the condensation of different types of solid particles, which determined the composition of the planets that eventually formed. The higher temperatures closer to the Sun allowed for the condensation of metals and silicates, while the cooler temperatures farther out allowed for the condensation of ices, such as water, methane, and ammonia. This temperature gradient led to the formation of the terrestrial planets in the inner Solar System and the giant planets in the outer Solar System.

Which Physical Parameter More Than Any Other Most Probably Controlled