AS101 Study Guide - Midterm Guide: Planetary Nebula, Steady State Theory, Emission Nebula
Document Summary
The universe: everything that physically exists in all forms of matter energy and momentum. Astronomy - (general) the study of object and matter outside the earth"s atmosphere. Cosmology (big bang) branch of astronomy dealing with origin and structure of universe. Astrophysics (mathematical) branch of astronomy dealing with the behaviour, physical properties and dynamic processes of celestial objects. Stellar astronomy study of stars and stellar evolution planetary science study of the solar system. Archaeoastronomy study of astronomical practices, celestial lore, mythologies, religions of ancient cultures. Spectroscopy the study of the nature of light with respect to wavelength. Visible light spectrum: range of emr detectable by human eye. Stars - intensely hot, gaseous, spherical bodies which produce energy by hydrogen burning. Sumerians: stars always remained in same place but planets moved, god was responsible for movement, recorded positions oo stars and planets and gave names to many constellations, counted in. Babylonians: produced star catalogues and predicted planetary motions.
