1 Topics: Brahe & Kepler Ellipses Kepler’s Laws The “NOSE” Have It!Topics:Brahe & KeplerEllipsesKepler’s Laws
2 Tycho Brahe (1546-1601) Danish Nobility. Astronomer Had a nice mustache?
3 King Tycho?He built a castle with a HUGE observatory on the island.
4 Brahe’s Mission Brahe wanted to verify the Copernican model. He was in search of PARALLAX!He was able to collect tons of data without a telescope!
5 In the process….He made observations of a supernova (nova = new star) in 1572.He made careful observations of a comet in 1577 and showed that it was further away than the moon.How did these observations and findings rock the Aristotelian theories?
6 Brahe’s Blunder?Ultimately, Brahe couldn’t find any stellar parallax. As a result, he concluded (correctly) that one of the following must be true:The Earth was motionless at the center of the Universe.The stars were so far away that their parallax was too small to measure.
7 Brahe’s Universe Universe Chose to revert to a Geocentric model!Earth at the center….planets revolve around the sun!
8 Kepler (1571-1630) Mathematician Astrologist Astronomer Big on Copernican model!
9 Kepler’s Universe… Included the FIVE PLATONIC SOLIDS! Included SIX SPHERES…one for each of the six known planets!Sun at center!