# astrophysics ![[Lagrange Points.png]] # [Outline](https://en.wikipedia.org/wiki/Outline_of_the_Solar_System) Area of gravitational dominance: https://en.wikipedia.org/wiki/Hill_sphere ## Inner solar system ## Outer solar system ## Trans-Neptunian Region ## Further regions ### Inner Oort Cloud ### Outer Oort Cloud # Geological features https://en.wikipedia.org/wiki/Lists_of_geological_features_of_the_Solar_System # Planets chemical composition https://pressbooks.online.ucf.edu/astronomybc/chapter/7-2-composition-and-structure-of-planets/ https://progearthplanetsci.springeropen.com/articles/10.1186/s40645-021-00429-4 https://www.sciencedirect.com/topics/earth-and-planetary-sciences/planetary-composition Titan, a Saturn moon has liquid methane and ethane on it's surface. [NASA](https://solarsystem.nasa.gov/moons/saturn-moons/titan/in-depth/)