who was he married to?
Barbara Müller
Johannes Kepler
In December 1595, Kepler was introduced to Barbara Müller, a 23-year-old widow (twice over) with a young daughter, Regina Lorenz, and he began courting her. Müller, an heiress to the estates of her late husbands, was also the daughter of a successful mill owner. Her father Jobst initially opposed a marriage. Even though Kepler had inherited his grandfather's nobility, Kepler's poverty made him an unacceptable match. Jobst relented after Kepler completed work on "Mysterium", but the engagement nearly fell apart while Kepler was away tending to the details of publication. However, Protestant officials—who had helped set up the match—pressured the Müllers to honor their agreement. Barbara and Johannes were married on 27 April 1597.
io and europa the inner two of jupiter's four largest moons They include also Ganymede, and Callisto what are these four moons collectively known as? The Galilean moons who discovered them? Galileo Galilei are these moons visible from earth? Yes through a telescope are there different type of this instrument? Yes, reflecting telescope, radio telescopes  and infrared telescopes who invented it? Hans Lippershey in what kind of research is the first type that you mentioned used? In astronomy as well as for terrestrial viewing are there any variations of this type of instrument? Yes the Keplerian telescope who discovered it? Johannes Kepler what is his birthplace? In the Free Imperial City of Weil der Stadt has he worked as an advisor? Yes to Emperor Rudolph II which subjects has he worked on? Mathematics and astronomy
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Johannes Kepler [SEP] Marriage to Barbara Müller
In December 1595, Kepler was introduced to Barbara Müller, a 23-year-old widow (twice over) with a young daughter, Regina Lorenz, and he began courting her. Müller, an heiress to the estates of her late husbands, was also the daughter of a successful mill owner. Her father Jobst initially opposed a marriage. Even though Kepler had inherited his grandfather's nobility, Kepler's poverty made him an unacceptable match. Jobst relented after Kepler completed work on "Mysterium", but the engagement nearly fell apart while Kepler was away tending to the details of publication. However, Protestant officials—who had helped set up the match—pressured the Müllers to honor their agreement.