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The Solar System's Major Moons

The Solar System's Major Moons

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Montage by Emily Lakdawalla. The Moon: Gari Arrillaga. Other moons data: NASA/JPL. Processing by Ted Stryk, Gordan Ugarkovic, Emily Lakdawalla, and Jason Perry.

The Solar System's Major Moons
The Solar System contains 18 or 19 natural satellites of planets that are large enough for self-gravity to make them round. (Why the uncertain number? Neptune’s moon Proteus is on the edge.) They are shown here to scale with each other. Two of them are larger than Mercury; seven are larger than Pluto and Eris. If they were not orbiting planets, many of these worlds would be called “planets,” and scientists who study them are called “planetary scientists.”

Permission is freely granted to reuse this graphic for educational purposes, though we would like to hear from you if you do!

Here are three alternative layouts of this graphic, without text. Email me if you wish me to add text, or to arrange them differently.

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. For uses not allowed by that license, contact us to request publication permission from the copyright holder: Ted Stryk : Jason Perry : Emily Lakdawalla : Gordan Ugarkovic

Original image data dated on or about May 30, 2013

Explore related images: Enceladus, Dione, Tethys, Titan, Rhea, Iapetus, Saturn's moons, Mimas, Jupiter's moons, Io, Europa, scale comparisons, Ganymede, amateur image processing, presentation slides, Callisto, the Moon, Bruce Murray Space Image Library, Cassini, Galileo, Voyager 1 and 2, amateur astrophotos, Proteus, pretty pictures, Triton, Uranus' moons

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