Johannes Kepler
en.wikipedia.orgToday is Johannes Kepler's birthday (27 December 1571 – 15 November 1630)
Newton, Babbage, and Kepler were born on the 25th, 26th, and 27th. The Renaissance Mathematicus blogs about Kepler every year (part 3) https://thonyc.wordpress.com/the-trilogies-of-christmas-past...