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English physicist and mathematician, who was the culminating figure of the scientific revolution of the 17th century.
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developed his own celestial model of a heliocentric planetary system. Around 1514, he shared his findings in the Commentariolus.
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Danish astronomer whose work in developing astronomical instruments and in measuring and fixing the positions of stars paved the way for future discoveries.
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used his newly invented telescope to discover four of the moons circling Jupiter, to study Saturn, to observe the phases of Venus, and to study sunspots on the Sun.
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The Holy Roman Empire of German Nationality at the Time of Kepler.
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was an English physician who made seminal contributions in anatomy and physiology. He was the first known physician to describe completely and in detail the systemic circulation
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was a Dutch tradesman and scientist, best known for his work on the development and improvement of the microscope.
