EPSC 201 Lecture Notes - Lecture 1: Edwin Hubble, Observable Universe, Blood Orange
29 Jan 2016
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The earth in context its creation and functioning. Formation and basic characteristics of the solar system + the earth. The universe: all of space, all the matter and energy within it. Cosmology: scientific study of the universe, its 1) structure and 2) history. History of what we know of the universe. This is what we knew 3000 years ago: The stars are fixed relative to each other. All the stars rotate about a fixed point. The planets move against the background of stars i. ii. iii. i. ii. This is what we did not know 3000 years ago: Up until the middle ages, we thought that the universe was geocentric and we thought the earth sat at the center of the universe, we thought the moon, planets and starts circled around us and we were motionless. Ptolemy proposed equations to predict the movement of planets. During the renaissance, we started accepting the heliocentric model, where the.
