ASTR 1000 Lecture Notes - Lecture 2: Scientific Notation, Ecliptic, Celestial Equator
Document Summary
Science is the study of the natural world based on simple, repeatable steps used to acquire and interpret data. These steps are known as the scientific method : make observaion, ask a quesion, suggest a hypothesis, make a predicion, perform a test. Explain a wide variety of observations with a few simple principles, and. Must be supported by a large, compelling body of evidence. Must not have failed any crucial test of its validity. Astronomy is a science focused on learning about how stars, planets, and other celestial objects work. Astrology is a search for hidden influences on human lives based on the positions of planets and stars in the sky. Stars at different distances all appear to lie on the celestial sphere. The ecliptic is the sun"s apparent path through the celestial sphere. North celestial pole is directly above earth"s north pole. South celestial pole is directly above earth"s south pole.
