The Force Of Gravity On The Moon Is A Fraction Of The Gravity On The Earth, So The Moon Would Not Be Able To Attract The Pen To Inself.

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The force of gravity on the moon is a fraction of the gravity on the
earth, so the moon would not be able to attract the pen to inself.
Rather, it would only be able to suspend the pen.
-- The Pen Is Mightier Than the Moon Hall of Fame

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