Johannes Kepler, German Astronomer is a photograph by Sheila Terry which was uploaded on May 11th, 2013.
Johannes Kepler, German Astronomer
Johannes Kepler (1571-1630), German astronomer. Kepler devised the three fundamental laws of planetary motion. These laws were based on detailed... more
by Sheila Terry
Title
Johannes Kepler, German Astronomer
Artist
Sheila Terry
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Photograph
Description
Johannes Kepler (1571-1630), German astronomer. Kepler devised the three fundamental laws of planetary motion. These laws were based on detailed observations of the planets made by himself and the Danish astronomer Tycho Brahe. Kepler's first law states that the planets orbit the Sun in elliptical paths, with the Sun at one focus of the ellipse. The second law states that the closer a planet comes to the Sun, the faster it moves. Kepler's third law states that the ratio of the cube of a planet's mean distance from the Sun to the square of its orbital period is a constant. Newton used these ideas to formulate his theory of gravity.
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May 11th, 2013
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