How Big is the Solar System? Meet the 5 Dwarf Planets! Explore the Solar System: The Gas Giants. Explore the Solar System: The Rocky Planets. Here Comes the Sun: Crash Course Kids #5.1. Outer Space: "A Beautiful, Beautiful World," The Earth Song by StoryBots. Outer Space: "I'm So Hot," The Sun Song by StoryBots. Outer Space: "We are the Planets," The Solar System Song by StoryBots. The Solar System Song.