ASTR 101 Chapter Notes - Chapter 1: Tychonic System, George Biddell Airy, Friedrich Bessel
6 Sep 2016
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In 2011, researches at cern sent a beam of neutrinos on a 730km journey. When the trip was clocked, seems the neutrinos had surpassed the speed of light in a vacuum. Scientific community response: measurements had to be wrong, which they were, because of einstein. Now think of 4 centuries from now where einstein"s ideas have been supplanted. Astronomers in 19th century thought milky way was the only galaxy, so thought andromeda galaxy was a single star surrounded by a nascent solar system. Nicholas copernicus theory of heliocentrism: the claim that earth rotates daily and revolves annually around the sun. Proposed in 1543 in his book de revolutionibus orbium. 1588, tycho brahe proposed new kind of geocentric system that. Squared with deep intuitions about how the world appeared to behave. Fit the available data better than copernicus"s system did. Brahe"s data on mars is what kepler used to work out the elliptical nature of planetary motion.
