1. This is the third largest of Jupiter's moons and is large, rocky, and volcanically active. Thebe Io Ganymede Leda
2. The biggest moon of Uranus, it is covered by many small craters, huge impact basin ice cliffs, and fault lines. Titania Umbriel Oberon Ariel
3. This moon, which is lacking a round shape, is Neptune's second largest moon. Triton Larissa Galatea Proteus
4. These two planets in our solar system do not have any moons. Mercury and Pluto Venus and Pluto Mercury and Venus Mars and Venus
5. This is the smallest known moon in our solar system, belonging to Mars. Deimos Rhea Phobos Io
6. The largest of Neptune's moons is believed to not have formed around Neptune but rather was captured by Neptune's gravity. Nereid Larissa Naiad Triton
7. This icy outer moon, scarred with impact craters and many parallel faults, is Jupiter's largest moon. Callisto Ganymede Europa Io
8. This is the only moon in which the details of its surface can be seen through a telescope from Earth. Earth's Moon Ganymede Titania Triton
9. This moon is closest in size to its planet, Pluto. Umbriel Proteus Charon Ophelia
10. This is the darkest moon of Uranus. Ariel Titania Miranda Umbriel
