Johannes Kepler, was a German astronomer and natural philosopher, noted for formulating and verifying the three laws of planetary motion. These laws are now known as Kepler's laws. Johannes Kepler was born in Weil der Stadt in Swabia, in southwest Germany. From 1574 to 1576 Johannes lived with his grandparents; in 1576 his parents moved to nearby Leonberg, where Johannes entered the Latin school. In 1584 he entered the Protestant seminary at Adelberg, and in 1589 he began his university …showed first 75 words of 689 total…

…showed last 75 words of 689 total…first science fiction novel, his Somnium, published in 1634 and describing a voyage to the Moon. He wrote extensively on geometrical optics, and was the first to correctly sort out once and for all the production of real versus virtual images by mirrors and lenses. Kepler also made contributions in the field of optics and developed a system of infinitesimals in mathematics, which was a forerunner of calculus. Kepler died on November 15, 1630, in Regensburg. ------------------------------------------------------------------------ **Bibliography**