Brahe_Tycho6

Brahe & "Kepler" ->  Johannes Kepler was Tycho’s assistant and was given records of the planetary positions. Hundreds of pages of data took a very long time for Kepler to sort through. Kepler’s use of mathematics allowed him to develop his three laws of planetary motion. Tycho did not have much knowledge of mathematics. These laws are still in wide use today. Kepler's three Laws of Planetary Motion are:  Besides their usefulness in astronomy in the past and today, Kepler's Laws added more of a mathematical framework to the heliocentric model of the universe, and so added even more fuel to the Copernican Revolution. After all, the Scientific Revolution wanted everything to be based in observation and testable and provable hypotheses. Nicholas Reimers was the son of a swineherd from the present day Holstein region in northern Germany. In 1559, the region was conquered by Denmark and became part of that kingdom with Danish now spoken as well as German. The self "educated" Reimers became an assistant to Eric Lange, a Danish nobleman and relative of Tycho Brahe. Reimers visited Unaniborg and managed to steal the solar model of Tycho. In 1588, Reimers added an additional surname Ursus (bear) to his name and wrote a book based on the Tychonic model. This book got him a job as an //astrologer// with the unholy Roman emperor Frederick II in Prague. He was the "bait" to lure Tycho to Prague.
 * 1) Every planet follows an elliptical orbit around the sun.
 * 2) An imaginary line from the center of the sun to the center of a planet sweeps out the same area in the same given time. One way of understanding this is by picturing it as planets move faster when they are closer to the sun, so even though they are closer so the area they sweep out would seem less, it is the same because in the same time frame the planet covers more distance.
 * 3) The square of a planet's period (year) is proportional to the cube of its distance from the sun: