Exploring Our Solar System A Brief Overview of the Planets | Planets and Space for Kids Here is an in-depth introduction to the Solar System and the planets that are in it. From the sun to why poor Pluto is no longer considered a planet, come along for a ride across the Solar System and learn a ton of cool facts about Solar System! FreeSchool is great for kids! How many planets are in the solar system? How did it form in the Milky Way galaxy? Learn facts about the solar system’s genesis, plus it