Go on a trip throughout our galaxy and others with this incredible in-depth guide! There's a Milky Way's worth of intriguing facts and amazing photographs in this volume focusing on the swirling groups of stars and stardust we call galaxies. Readers will learn more about what galaxies are and how they form, as well as more about the space phenomena known as nebulae and black holes. They'll also learn about the incredible astronomers who discovered what we know about all these amazing scientific sights.