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Author: Nicole Granucci, The Conversation

Instructor of Physics, Quinnipiac University
A single crescent moon is a familiar sight in Earth's sky, but with Saturn's many moons, you can see three or even more. The three moons shown here are Titan (3,200 miles or 5,150 kilometers across), Mimas (246 miles or 396 kilometers across), and Rhea (949 miles or 1,527 kilometers across). This view looks toward the anti-Saturn hemisphere of Titan. North on Titan is to the right. Credit: NASA.
Science, The Moon

Why does Earth have only one Moon?

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