First up, he's making a special delivery to the international space station. Then it's time to help solve a problem with the Mars rover, and George dreams of going where monkey (or human) has gone before, Mars! Join George on an exciting journey into outer space and learn all about space travel, gravity, the solar system, and Mars. Based on the Disney Junior show, this story is filled to the brim with additional facts, real photos, experiments, activities, and more. Learning about science has never been so much fun!