Our solar system is a wondrous place with a single star, our Sun, and everything that orbits around it: planets, moons, asteroids and comets. What do we know about this beautiful solar system we call home? It's part of an even larger cosmos, with billions of other solar systems. Jim Green, NASA's chief scientist hosts a NASA podcast called Gravity Assist, where he talks with some of the greatest planetary scientists of our time. They discuss and explore what's in our solar system, its origins, and how it evolved.