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Johannes Kepler

German mathematician and astronomer (1571–1630)

10 dated entries naming Johannes Kepler, drawn from 10 separate years between 1597 CE and 1757 CE. Nothing here is written by us: each line is the sentence a Wikipedia year article used, and the link beside it opens the exact revision.

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16th century

  • 1597April 27 – Johannes Kepler marries Barbara Muhleck.source

17th century

  • 1601October 26 – Johannes Kepler, assistant to Tycho Brahe, is promoted to the position of Royal Mathematician of the Holy Roman Empire after Brahe's sudden death.source
  • 1604October 9 – Kepler's Supernova (SN 1604) is first observed from the northern parts of the Italian Peninsula. Beginning on October 17, Johannes Kepler begins a year's observation of it from Prague. There won't be another supernova visible to the "naked-eye" until 1987. , this is the last supernova to be observed in the Milky Way.source
  • 1607October 27 – Halley's Comet is seen by Johannes Kepler.source
  • 1609Johannes Kepler publishes his first two laws of planetary motion in Astronomia nova.source
  • 1614Astronomer Johannes Kepler soon begins to employ logarithms, in his description of the Solar System.source
  • 1615Johannes Kepler publishes Dissertatio cum Nuncio Sidereo, in response to Galileo's discovery of Jupiter's moons.source
  • 1618March 8 – Johannes Kepler discovers the third law of planetary motion (after some initial calculations, he soon rejects the idea, but on May 15 confirms the discovery).source
  • 1620August 7 – The mother of astronomer Johannes Kepler is arrested for witchcraft.source

18th century

  • 1757April 16 – The works of astronomer Galileo Galilei espousing heliocentrism are removed (with the approval of Pope Benedict XIV) from the Index Librorum Prohibitorum list of books banned by Roman Catholic Church, along with "all books teaching the earth's motion and the sun's immobility". Other works of heliocentrists Galileo, Nicolaus Copernicus, Johannes Kepler, Diego de Zúñiga and Paolo Foscarini remain on the list.source

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