Did you know that the moon was once part of Earth?The natural world comes alive for young readers (Ages 6-7) with Rookie Read-About RM Science With striking, full-color photos and just the right amount of text, this series immediately involves young readers as they discover intriguing facts about the fascinating world around them.Readers (Ages 6-7) will blast off with Rocket to learn fascinating facts like this-and more-all in the pages of this book.