There are thousands of exoplanets scattered throughout the Milky Way galaxy, and scientists are on a constant quest to find one just like Earth. In Exoplanets, Simon examines the planets outside of our solar system and uncovers what makes them habitable, our efforts to discover new life, and more.

With clear, simple text and stunning full-color photographs, readers will explore the farthest reaches of space and explore the answer to the question: do aliens exist?

This book includes an author's note, a glossary, an index, and supports the Common Core State Standards.