PLANETS & THE SOLAR SYSTEM The Earth is one of nine planets that revolve around the Sun, which is the center of our solar system. In Planets & The Solar System, students will learn the key characteristics of each planet, the difference between inner and outer planets and which planets have their own moons. They’ll take a fascinating look at how remote-control rovers are designed to explore other surfaces in the solar system. Also, in a fun, hands-on activity, students will demonstrate how gravity keeps all the members of the solar system in orbit around the Sun. This program is based on the concepts outlined in the National Science Education Standards for Earth Science: Structure of the Earth System, Earth’s History and Earth in the solar system.