NAME Study Guide – Astronomy Part 2 1.) What are the names of the inner planets in order, starting at the Sun (4)? 2.) What characteristics do the inner planets share? 3.) What are the names of the outer planets in order, starting at the Sun (4)? 4.) What characteristics do the outer planets share? 5.) Briefly describe each of the 8 planets. 6.) What are the names of the dwarf planets (5)? 7.) What are the characteristics of the dwarf planets? 8.) What is the area between Mars and Jupiter? 9.) Which dwarf planet is found here? 10.) What area is beyond Neptune? 11.) Which Dwarf planets are found here? 12.) What is the area beyond the Kuiper Belt? 13.) What dwarf planet is found there? 14.) What is the outer edge of the solar system where comets originate? 15.) What is a meteoroid? 16.) What is a meteor? 17.) What is a meteorite? 18.) What do comets orbit? 19.) What are comets made of? What are the parts of a comet? 20.) Describe the orbit of a comet 21.) Halley’s Comet takes how many years to orbit? 22.) When was the last time Halley’s Comet came close to Earth? When is the next time? 23.) What do asteroids orbit? 24.) Where are most asteroids found? 25.) What are asteroids made of? 26.) How is an asteroid’s orbit different than a comet’s? 27.) What is an AU? How long is this in miles? 28.) What is a light year? How long is this in miles? 29.) Describe the Milky Way galaxy 30.) Where is the Sun within the Milky Way? 31.) What are the main types of galaxies? 32.) How far is it from our Sun to the nearest star? 33.) How far is it across our galaxy? 34.) How far is it from the Milky Way to the Andromeda Galaxy? 35.) What force holds solar systems together? 36.) What force holds galaxies together?