AS101 Chapter Notes - Chapter 2: Celestial Pole, Equinox, March Equinox
Document Summary
Chapter 2: guide to the sky: patterns and cycles. Constellations one of the stellar patterns identified by name, usually of mythological gods, people, animals, or objects. Most constellations are made up of stars that are not physically close to one another. Some stars may be moving in different directions. Asterism a named grouping of stars that is not one of the recognized constellations. Magnitude scale the astronomical brightness scale; the larger the number, the fainter the star. Apparent visual magnitude a measure of the brightness of a star as seen by human eyes on earth. Flux a measure of the flow of energy out of a surface; usually applied to light. Celestial sphere an imaginary sphere of very large radius surrounding earth to which the planets, stars, Scientific model a concept that helps you think about some aspect of nature without necessarily being true. Precession the slow change in orientation of the earth"s axis of rotation.
