Mercury is the planet closest to the sun, which has made studying this iron planet very difficult. However, scientists have found new ways to do just that. This book is filled with interesting facts, stunning photographs, and detailed diagrams to help readers learn all about our solar system's smallest planet. Series Review: Our Solar System"This series for younger readers is a solid introduction to the solar system...Bolded titles and vocabulary words, easy to read typeface with lower level text, and book size make this series perfect for early elementary students."-Library Media Connection
