How far away is the sun? What is a shooting star? Why is there life on Earth? Learn the answers to these questions and more in this fun and fact-filled guide to our universe, the solar system, and natural phenomena like life and gravity. In this awesome guide, discover how to become an astronomer by studying the Sun, Moon, and stars in our galaxy, as well as learning about the terrains of different planets (did you know that there are volcanoes known...