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What observations of Jupiter did Johannes Kepler publish in 1611?
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Johannes Kepler
Johannes Kepler, engraving by N. Dietz.
In 1611, Johannes Kepler published Narratio de Jovis Satellitibus ("Narration Concerning the Jovian Satellites"), which detailed his own observations of Jupiter made between August 30 and September 9, 1610.1
This work served as one of three important treatises Kepler wrote in response to Galileo Galileiβs discovery of the moons of Jupiter, providing significant support for Galileo's findings.1