(8) The Solar System (6 pts.) (8 a) In another solar system, we discover two terrestrial planets both with atmospheres made of 99% carbon dioxide.

(8) The Solar System

(6 pts.) (8 a) In another solar system, we discover two terrestrial planets both with atmospheres made of 99% carbon dioxide. However, one planet has ten times more atmosphere than the other. Propose three hypotheses to explain why they would differ so much in their quantities of atmosphere.

(4 pts.) (8 b) Our solar system contains 4 terrestrial planets and 4 jovian planets. Suppose we discover another solar system with 8 terrestrial planets and no jovian planets. Propose a hypothesis to explain why the formation of that solar system would have turned out so differently from our own.

(4 pts.) (8 c) Why would astronomers be surprised to discover an active volcano on an asteroid?

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