Copernicus, medicine, and the heliocentric concept.
With his back to the academically poorly oriented times of medieval Europe, Copernicus, the medical man, led the world into a concept of infinite space. His revolutionary concepts of astrophysics formed a buttress for the efforts of his successors. He looked to the stars, but he also had time to look at and help man.
D001256:Astronomy / Q000266:history*; D049668:History, 15th Century; D049669:History, 16th Century; D010684:Philosophy / Q000266:history; D011044:Poland