Chapter1B.99yrs - 1 99 Years that Revolutionized Astronomy...

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Unformatted text preview: 1 99 Years that Revolutionized Astronomy Nicholas Copernicus (1473- 1543 ) On the Revolutions of the Celestial Spheres; heliocentric model Tycho Brahe (1546-1601) greatest astronomer of the era; vast collections of observations [pre-telescope] Johannes Kepler (1571-1630) 3 laws of planetary motion Galileo Galilei (1564- 1642 ) telescopic observations Isaac Newton ( 1642-1727) 3 laws of motion; law of gravitation 2 Nicholas Copernicus 3 On the Revolutions of Celestial Spheres (1543) fluential book, only published on his death-bed Osianders preface portant notes: still had a few epicycles not noticeably better at predicting planetary positions than Ptolemy model simpler, more elegant (but philosophical, not scientific , conclusion) portant first step, however! 4 explains retrograde motion better than the geocentric model 5 Why wasnt the Copernican model immediately accepted? it used circles, more than Ptolemy was no more accurate than the Geocentric model dogma/ out-Aristotled Ptolemy 6 Tycho Brahe 7 Tycho Brahe (1546-1601) Danish nobility greatest pre-telescope observer supernovae and comets 1599 became court mathematician to Rudolf II of Bohemia touted the Tychonic Model 1600 hires J. Kepler 8 Johannes Kepler 9 ted mathematician used precise observations fro astronomer Tycho Brahe to try to make an accurat model of the solar system a model that fit the data Discovered 3 laws of planetary motion (Note : these laws are empirical, but had no physical basisyet!) Johannes Kepler 10 Johannes Kepler (1571 - 1630) had a tough life Kepler was abandoned by his parents,...
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Chapter1B.99yrs - 1 99 Years that Revolutionized Astronomy...

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