Explore! . You don\'t need a space ship to explore our solar system. Travel on the Internet to the far reaches of space! Find out how much you would weigh on Pluto, or how old you would be on Mars! Learn which planet is the largest, or which one would float in a tub full of water. Learn about how to become an astronaut, or read about dogs who went to space! Press the RIGHT-ARROW KEY on your keyboard to get started!.