How well do you know the Moon? Take this twenty-question quiz and see! Don't worry, there are no grades on this quiz. Most of the answers can also be found in my book, The Big Splat.

4. What percentage of the Moon's surface can be seen (at least occasionally) from the Earth?

(A) 50 percent

(B) 59 percent

(C) 75 percent

(D) 100 percent

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