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Transcript of Johannes Kepler
His family was very poor and he became sick with smallpox at seven-months old.
He described his father as "...vicious, inflexible, quarrelsome..." and his mother as "...gossiping and quarrelsome, of a bad disposition".
His mother made potions which she believed had magical powers. She was raised by an aunt who was burned at the stake as a witch.
Kepler had to hire several lawyers to defend his seventy-year-old mother in jail because of witchcraft. Training Important Contributions First to explain that the tides are caused by the Moon
First to determine the birth year of Jesus Christ, that is now universally accepted.
He created the word "satellite" Johannes Kepler Childhood Johannes Kepler was a great mathematician
Kepler discovered three laws of planetary motion, which he published in 1609:
I. The planets move in elliptical orbits with the sun at a focus.
II. In their orbits around the sun, the planets sweep out equal areas in equal times.
III. The period of time it takes a planet to orbit the sun is related to its distance from the sun. Kepler's First's:
First to correctly explain planetary motion
First to investigate the formation of pictures with a pin hole camera
First to explain the process of vision by refraction within the eye
First to formulate eyeglass designing for nearsightedness and farsightedness
First to explain the use of both eyes to judge distance
First to explain how a telescope works Johannes Kepler
Brianna Harper "... the ways by which men arrive at knowledge of the celestial things are hardly less wonderful than the nature of these things themselves"
- Johannes Kepler
(1571-1630) Astronomers can use Kepler's work to understand more about planets and their orbit
His work lead to the invention of calculus References Kepler had a hard time in elementary school
His performance improved in high school at Mualbronn, allowing him to get a scholarship for The University of Tübingen to study mainly theology and philosophy, but also mathematics and astronomy.
At the university, Kepler excelled
In 1594, he was offered a professorship of astronomy in Graz, Styria
One of the duties of this professorship was to make astrological predictions. Importance to our lives Baumgardt, C. Johannes Kepler: Life and Letters,
Gollancz, London 1952.
Fowler, M. (1996). Johannes Kepler. UVa Physics.
Retreived January 21 2013, from
Koestler, A.The Sleepwalkers, Arkana Books, London, 1989.
NASA Ames Research Center. (2012, March). Kepler: A
Search for Habitable Planets. Retrieved January 21 2013,
Rogers, E. Physics for the Inquiring Mind, Princeton
Fowler, M. (1996). Johannes Kepler. UVa Physics. Retreived
January 21 2013, from