According to Kepler’s Second Law of Planetary Motion, as a planet move

Dear Nightmare007,

I'm happy to respond.

My friend, you certainly understand astrophysics well. Planets revolve around Sun. The whole solar system revolves around core of Milky Way. The Milky Way and Andromeda galaxies and other members of Local Group revolve around each other, all while the Local Group is plummeting toward the center of the Laniakea supercluster at almost the speed of light. Far more dynamic than Ptolemy's model!

Let's talk about pronouns. The pronoun-antecedent relationship is a subtle one. If there's zero ambiguity, only reference noun, then of course that is one thing that makes the antecedent clear. Nevertheless, other features of the sentence may make the antecedent clear even if there is more than one noun present. Parallelism plays a huge role in the pronoun-antecedent relationship. After all, parallelism is not a grammatical structure: instead, it is a logical structure, and the grammar simply follows the pattern of logical correspondences. The pronoun-antecedent relationship is also a logical relationship, and for this reason, parallelism has such an impact on it. When we have two clauses in direct parallelism, with a noun subject in the first clause and pronoun subject in the second clause, the strong implication is that the first-subject noun is the antecedent of the second-subject pronoun. A sense of identity is created by the strong pattern of logical correspondence.

Does all this make sense?
Mike

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