Johannes Kepler

Johannes Kepler attended Charles University in Prague. (PROSE: The Long Step Backward) According to the Seventh Doctor, he possessed a "scientific genius". (PROSE: Fable Fusion) The Thirteenth Doctor called him a "mathematical genius" and one of the prime movers of astronomy. (COMIC: Herald of Madness)

Biography
He had a wife and two children, Heinrich and Susanna. When they died in infancy in the 16th century, he and his wife moved to Bohemia to start a new life in the new century. By 1601 he was a student of Tycho Brahe, who showed him and his wife kindness.

While accompanying Brahe to the Gathering in Castle Houska, he met the Thirteenth Doctor, Graham O'Brien, Ryan Sinclair and Yasmin Khan in Kokorin Forest in Central Bohemia. (COMIC: Herald of Madness)

In 1604, Kepler wrote to Galileo Galilei to warn him of a delusion of celestial vapours. (PROSE: The Empire of Glass)

Scientific achievements
Kepler wrote the three laws of planetary motion and provided a new scientific understanding of stars. (COMIC: Herald of Madness)

Legacy
Many things were named in honour of Kepler, including a satellite, lunar crater, star system and ice lolly. (COMIC: Herald of Madness)