Chrono for Kepler cf Baumgardt, 1951 1571, born dec 27 in weil, wurttemberg 1577, to latin school, leonberg 1584, to convent school, adelberg 1589, to schwabian university, tubingen, theology and philosophy 1594, to graz, professor of morals and math 1595, may 15, began writing the harbinger 1596, publ the harbinger (mysterium cosmographicum) (sent copies to galileo, brahe) 1597, feb 09, married barbara muller 1597, aug 04, galileo writes kepler 1597, oct 13, kepler replies to galileo 1600, feb to june, with brahe near prague, again arrives october 1600, aug 01, kepler (and all protestants) expelled fr graz 1601, tycho dies, kepler becomes imperial mathematicus 1604, publ work on optics (astronomiae pars optica) 1605, writes on ecilpse of oct 12 1606, writes on date of birth of christ (05 BC) 1607, september, observes halley's comet with telescope 1607, publ new star in serpentarius 1607, nov 30, letter referss to burning of brune 1608, publ observations of comet 1609, publ mercury in the sun 1609, publ the new astronomy (nova astronomia) 1610, aug 09, writes galileo re starry messenger 1610, aug 19, galileo replies 1610, publ discussion of galileo's starry messenger 1611, publ work on satellites of jupiter 1611, theologians protested kepler's ultra-liberal vies on the lord's supper 1611, barbara (wife) and one son die 1612, kepler leaves prague for linz (until 1626) 1612, kepler forbidden communion 1613, oct 30, kepler marries susanne 1615, kepler's calculus, new stereometry of wine barrels 1615, late, kepler's mother accused of witchcraft 1616, kepler against council of trent 1618, 1620, 1621, publ epitome 1619, publ the world harmony 1619, spring, kepler hears of the condemnation of copernicus 1619, aug 04, kepler hears one of his books has been banned in italy 1620, aug 07, kepler's mother imprisoned 1621, june 30, 2nd edn of the harbinger 1621, oct, kepler's mother released 1622, mother died 1626, nov 20, kepler leaves linz 1627, publ rudolphine tables 1629, july 25, kepler moves to sagan, silesia 1629, kepler complains of fludd 1630, fall, kepler leaves sagan 1630, nov 15, kepler dies end