Uranus has 15 moons. Neptune may only have 2 moons, Triton and Nereid. Pluto has a moon named Charon. Mercury doesn't have a moon. Venus doesn't either.
Earth has one.
Once Around the Galaxy. Franklin Watts, 1983. In this book it showed me pictures of our galaxy arid other far away galaxies. Galaxies are made out of big clusters of stars. Holiday House, 1992.