Suppose that a protoplanetary disk around a Sun-like star is heated past about 5 AU by an unknown process.How might the resulting planetary system differ from our own?
A) The outer planets would orbit faster.
B) The outer planets would be rockier.
C) The outer planets would be more massive.
D) This would not affect any of the planets.

Question

Quizplus · Accepted Answer

Heating a protoplanetary disk past about 5 AU would cause volatile compounds, which normally condense into ices in the outer regions, to remain gaseous and not contribute to the formation of icy bodies. This would lead to the formation of rockier planets in the outer regions, as opposed to the gas and ice giants in our own Solar System.

Suppose That a Protoplanetary Disk Around a Sun-Like Star Is