Week 1 In Class Notes
Week 1 In Class Notes ASTR 115
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This 2 page Class Notes was uploaded by Evan Kirkpatrick on Sunday October 4, 2015. The Class Notes belongs to ASTR 115 at University of Washington taught by in Fall 2015. Since its upload, it has received 20 views. For similar materials see INTRO ASTROBIOLOGY (NW) in Environmental Science at University of Washington.
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Date Created: 10/04/15
Week 1 in Class Notes World Views Geocentric Aristotle Ptolemy 1st c 0 Earth is the center of the universe Heliocentric Revolution Copernicus 16th c 0 Sun is the center of the universe Evolutionary Revolution Darwin 19th c o Humans are all related to animals 0 We all have a common ancestor Cosmological Revolution Einstein Hubble 20th c 0 There are other galaxies besides ours Astrobiological Revolution 0 Other intelligent life History of Science Religion and science were intertwined 0 Now very separated Atomism Believed in a innumerable worlds some inhabited Geocentrism Earth is special and the center of the universe Copernicus Sun is the center of the universe Earth is just a planet Stars have other planets Kepler Abandons spheres and circles lnvents physical model 3 laws of planetary motion GaMeiGaMeo Used a telescope to see moons ofJupiter Venus has phases Saturn has rings Milky Way tons of stars Isaac Newton Newton described motion of all bodies Physics is universal and mathematical His gravitational law produced elliptic orbits around the Sun Basic elements of scienti c method Charles Darwin Descent with modi cation aka natural selection Suggests common ancestor Accidental Discoveries Big Bang Microwave Penicillin Other Scienti c knowledge is falsi able Theory is as close to truth as we can get Good theories make unexpected predictions Scienti c Theory A model that explains a variety of observations through a series of general principles Kuiper Belt Objects Pluto and other forms of mass that make up the Kuiper Belt ShapleyCrutis Debate Our galaxy is no the only one
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