Blast off on an exciting space adventure with Astronaut Greysen! Greysen has always dreamed of exploring the stars, and today the adventure begins. Suit up and join Astronaut Greysen on a mission to Mercury, the smallest planet and the one closest to the Sun. Together, young readers will discover: What makes Mercury so unique Why the planet is covered in craters How hot it gets near the Sun What astronauts might see if they visited Through colorful illustrations and simple explanations, this fun story introduces curious kids to the wonders of our solar system while sparking imagination and a love of space. Perfect for children who love: Space and planets Astronauts and rockets Science and discovery Bedtime adventures This book is part of the Astronaut Greysen Adventures series, where each mission explores a different planet in our solar system. Get ready to launch into learning and adventure! Next stop: the rest of the solar system.