Johannes Kepler 1571  1630 German Astronomer 

Kepler was the Chief founder of modern astronomy.
Johannes Kepler was born in WeilderStadt, Germany. He studied at Tubingen, and in 1593 was appointed professor of mathematics at Graz. He corresponded with the astronomer Tycho Brahe, who was then in Prague, and for a short time worked with him. Kepler was the first to search for a physical explanation for planetary orbits and he discovered that the orbits are elliptical with the sun at one focus. He announced his first and second laws of planetary motion in Astronomia nova (1609), which formed the groundwork of Isaac Newton's discoveries. Kepler also founded modern optics by postulating the ray theory of light to explain vision. Image : Kepler's laws 
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