"Someone probably rejected relativity and said, 'How much
effect does the orbit of Mercury have on the people of earth?' "
_______________

The word "effect," (result, consequence) is a noun. "Affect" is a verb (to
act upon, to change or to cause a change), and, probably the appropriate
word for the context of your post.

Perhaps the use of correct English would reduce reader confusion?

"Best regards"

RF