1、Tycho Brahe,Character chronology,He was born in a noble family in Grams of Stroops in Sweden On December 14th 1546, growing up supported by his uncle. In 1560, He began to learn mathematics and astronomy and observe the eclipse. In 1563, his observation about near phase time of Jupiter and Saturn we

2、re earlier one month than astronomic forecast. He made a more precise and reliable astronomic watch.,In 1572, he discovered a new star in Cassiopeia , then this star is recognized as a supernovae. In 1576, with the help of the Danish King Frederick III, he built a observatory in the Yavin island. In

3、 1577,he observed a comet and concluded that it is not a phenomenon of the earth environment. In 1582,he put the length of the years to be accurated to a second.,In 1597,he left Danish for Germany after the death of the king. In 1599,he moved to Prague and accepted Johanns Kepler as his assistant. I

4、n 1601,he left us in Brahe.,Vin Island Observatory,The Second Observatory,Four Quadrant of Tycho Brahe,Scientific achievements,Tychos major contribution is his observation of the accumulation of a large number of data about the planets operation through a long-term. His observation is so accurate th

5、at all his contemporaries cannot reach again.,Scientific achievements,It is a supernova belonging to Cassiopeia. And it is discovered by Tycho in 1572.It is one of few macroscopic supernovas. The descendant use his name to name the supernova in momery of his great achievements. They called it Tychos

6、 supernova.,Tychos supernova(SN Cas 1572),Scientific achievements,Another important achievement is his observation of comet. In addition, he discovered the changes obliquity of the ecliptic, variation of moon and precession of the equinoxes.,The Comet of Tycho discovered,His assistant: Johanns Kepler (Another great astronomer),evaluation,He is a fantastic observation expert, but his world view is wrong. His system belongs to the geocentrism and he did not accept the Heliocentric theory. His contribution to astronomy is wonderful. His observation is so accurate that all his contemporaries cann