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Dec 15, 1571
Birth
Johannes Keplar was born in 1571 into a poor German family in the province of Württemberg -
Keplar's Education
Keplar attended a University located in Tubingen and studied a theological career. He learned about the principles of Copernicus and recognized his heliocentric hypothesis of the solar system which influences Keplar's work later in life. -
Keplar and Brahe
In the year 1600, Keplar meets astronomer Tycho Brahe in Prague. Keplar is offered the position of becoming Brahe's assistant after Keplar's abilities in mathematics are seen as useful to Brahe. Keplar accepts Brahe's offer and is tasked with helping Brahe to develop a theory that explains planetary motion. -
After Brahe's Death
After the death of Tycho Brahe in 1609, Keplar receives full access to records that were previously withheld from him as Brahe feared that if Keplar solved the theory alone he would receive all credit. -
Keplar's Laws (2/3)
Keplar develops principles that describe the behavior of planets based on their movements and paths through space. The principles are known today as Kepler's Laws. The first two laws were published in 1609 in The New Astronomy. The first law explains that each planet moves around the Sun in an orbit that is an ellipse, with the Sun at one focus of the ellipse. The second law explains that the straight line joining a planet and the Sun sweep out equal areas in space in equal intervals of time. -
Keplar's Third Law
Kepler's third and final law is finally published in 1619 in Harmonices Mundi (The Harmony of The World. This law explains that a planet's orbital period squared is proportional to the semimajor axis of its orbit cubed. -
Keplar's Death
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References/Images 1/2
“3.1 The Laws of Planetary Motion - Astronomy.” OpenStax, https://openstax.org/books/astronomy/pages/3-1-the-laws-of-planetary-motion.
crashcourse. “The New Astronomy: Crash Course History of Science #13.” YouTube, YouTube, 9 July 2018, https://www.youtube.com/watch?v=-FYvy3_egHw.
Darling, David. “Kepler, Johannes (1571-1630).” The Worlds of David Darling, https://www.daviddarling.info/encyclopedia/K/KeplerJ.html. -
References/Images 2/2
“Kepler's Education.” Johannes Kepler: Famous German Astronomer, https://renpkepler.weebly.com/keplers-education.html.
Mediastorehouse. “Print of Kepler and Tycho Brahe in the Observatory in Prague.” Media Storehouse Photo Prints, 23 Aug. 2021, https://www.mediastorehouse.com.au/fine-art-finder/artists/j-serra/kepler-tycho-brahe-observatory-prague-22673662.html?prodid=80446.