What is that big, bright object high in the night sky, reflecting the sun's light? It's the moon! With the help of vibrant images and factual, elementary-level STEM text, this nonfiction astronomy title for children examines the history of Earth's lunar satellite, its composition, formation, location, and effect on our planet. A space science feature spotlights the last manned visit to the moon and how soon astronauts will return. Captions, on-page definitions, additional resources, and an index support readers in grade 2 and up.