Geography 2090A/B Study Guide - Quiz Guide: Kuiper Belt, Low Earth Orbit, Oort Cloud
7 Apr 2015
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Document Summary
8 planets orbit the sun: mid-sized rocky worlds (mercury, venus, earth, mars), giant gas planets (jupiter, saturn, uranus, neptune), pluto is now called dwarf planet. Looking at all planets together is called comparative planetology. Moons (satellites: a satellite orbits a planet rather than a star, moons can have all types of surfaces. Asteroids: also called minor planets, small planets orbiting the sun. Comets: cloud of gas and dust being blown off a small icy world as its ice evaporates, no division between comets and asteroids. Inner parts of the oort cloud merge with the kuiper belt. planets ejected billions of objects from the inner parts of the solar system. Leo: space station orbits here along with remote sensing satellites and any satellites that. Leo is crowded so the space station and other objects have to be moved to avoid space junk. International agreements govern allocation of spaces within this orbit.
