On a clear night we see uncountable stars. These stars are only a small part of Milky Way. Stars, young or old, are not the only objects that can be found in our galaxy. Many stars are part of star clusters, they along with gas and dust can all be found within the Milky Way. Our galaxy is just one of more than one hundred billion galaxies in the universe. In Galaxies, we journey through the Milky Way and the galaxies beyond to explore the universe in which we live.