AST-1001 Lecture Notes - Lecture 6: Terrestrial Planet, Supernova, Type Ia Supernova
Document Summary
Chapter 8: origin of the solar system and extrasolar planets. A planet revolves around the sun but rotates on its own axis. All planets revolve counterclockwise and rotate counterclockwise. Venus and uranus are the exceptions in rotation. The solar system is a flat disk-shaped object. Two kinds of planets: terrestrial and jovian. Two kinds are distinguished by their location and by properties such as number of moons and presence or absence of rings. Pluto has a more elliptical orbit than the others. The sun makes up over 99% of the mass of the solar system. Terrestrial planets are small, dense, rocky, with little or no atmosphere. Jovian planets are large, low-density worlds with thick atmospheres and liquid or ice interiors; possess rings and extensive satellite systems. Cosmic debris like asteroids that are mostly between mars and jupiter. The asteroid sirrus is now considered a dwarf planet. Pla(cid:374)ets are held together (cid:448)ery tightly (cid:271)y their gra(cid:448)ity a(cid:374)d do (cid:374)ot (cid:862)(cid:271)reak apart(cid:863)
