Planets explores the science of what we see in the night sky. Kids will find out which planet in our solar system could float in a bathtub, learn how Neptune was discovered by math, explore the rocky surface of Mars and more. Engaging photos, exciting graphics, and a fun quiz at the end of each book will keep them learning. Aligned to Common Core Standards and correlated to state standards. Super Sandcastle is an imprint of Abdo Publishing, a division of ABDO.