Johannes Kepler

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Scientific Biographies

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Johannes Kepler

--Analyzed Tycho Brahe's observations on Mars--Discovered 3 laws on planetary motion--1st law ->planets move in ellipses with the sun at one focus (1605)--2nd law -> the radius vector describes equal areas in equal time (1609)--3rd law -> The squares of the periodic times are to each other as the cubes of the mean (1618)

Early Life & Nationality

“I used to measure the heavens, now I measure the shadows of Earth.”"I much prefer the sharpest criticism of a single intelligent man to the thoughtless approval to the masses." "Nature uses as little as possible of anything."

--From Weil der Stadt in Swabia, Southwest Germany--His father and mother were "rough and quarrelsome"--Lived with his grandparents during childhood (1574-1576)--Attended Latin school, Protestant seminary in Adelberg (1584), and Protestant university of Tubingen (1589)--Studied theology--Entered graduate school in 1591

Usage of Scientific Method

He used Tycho Brahe's observations in order to make inferences on the 3 "laws". He also used mathematics in order to determine properties of the planets and their movement.

Relationship to Church

Johannes Kepler(1571-1630)


Discoveries & Accomplishments


1609--Astronomia Nova.1619--Harmonices Mundi

More Discoveries & Accomplishments

"Johannes Kepler Facts, Quotes, Laws of Planetary Motion, Astronomy, Information." Johannes Kepler Facts, Quotes, Laws of Planetary Motion, Astronomy, Information. Science Kids, 13 July 2013. Web. 15 Nov. 2013.Wilson, Martin. "" Johannes Kepler Info, 2013. Web. 15 Nov. 2013.Halen, Al Van. "The Galileo Project | Science | Johannes Kepler." The Galileo Project, 1995. Web. 15 Nov. 2013."Kepler: Johannes Kepler." Kepler: Johannes Kepler. National Aeronautics and Space Administration, 23 Oct. 2013. Web. 15 Nov. 2013.Dao, C. 2008. Man of Science, Man of God: Johann Kepler. Acts & Facts. 37 (3): 8.

--Explained how telescopes really worked--First to measure distance of stars using stellar parallax--Became founder of celestial mechanics after explaining planetary motion--Discovered that tides are caused by Earth's moon

Societal Effects

--It inspired Newton's law of gravity--Father of Celestial movements

--He was Protestant--All supported his ideas, but church didn't--Catholic church disliked Kepler's Protestant beliefs--Lutheran church shunned Kepler's ideas because he was sympathetic to Calvinists--All supported his ideas, but church didn't



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