What Is the Smallest Planet in Our Solar System?

By Staff WriterLast Updated Apr 8, 2020 7:07:38 PM ET
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Ian McKinnell/Photographer's Choice/Getty Images

Mercury is the smallest planet in our solar system; Jupiter is the largest.Pluto was once considered to be the smallest planet, but since Pluto is no longer thought to be a planet, Mercury now takes the title.

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