What are comets, and how do they form? Readers find out in this engaging guide to a popular space science topic. The clear, straightforward text is geared toward early learners and struggling readers, giving them the facts that support what they are learning in the classroom in a way that is easy for them to understand. Basic elementary science concepts are explained using at-level language and short, simple sentences, and vibrant photographs of comets create a memorable reading experience that will have young stargazers engrossed.