A family of aliens are passing the time on a ride through space by investigating facts about Earth. Follow along as the young aliens learn how much water is on Earth, how many people live there, and what keeps them from falling right off the surface! Readers will be entertained by the silly answers these aliens give as they guess the answers to questions about Earth. Through colorful, cartoon-like illustrations and easy-to-read font, readers will be engaged as they learn about planet Earth!