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[[Image:galileo.gif|thumb|300px|Galileo Gallilei]]
[[Image:Galileo.jpg|right|thumb|200px|Subterman's portrait, circa 1640]]
1564-1642 Italian physicist and astronomer who improved the [[telescope]] and had a famous dispute with the Catholic Church.
'''Galileo Galilei''' (1564-1642), often referred to simply as ''Galileo,'' was and Italian physicist and astronomer who improved the [[telescope]] and had a famous dispute with the Catholic Church.
In June or July of 1609, word reached Galileo about the [[telescope]], which had been invented in [[The Netherlands|Holland]]. Without knowing the technical details of the construction of the device, he managed to create one for himself. With it, he was able to witness a [[supernova]], observe our [[Moon]], and document the phases of [[Venus]]. He also located [[sunspots]]. Some of these discoveries helped support a [[heliocentric]] system.
In June or July of 1609, word reached Galileo about the [[telescope]], which had been invented in [[The Netherlands|Holland]]. Without knowing the technical details of the construction of the device, he managed to create one for himself. With it, he was able to witness a [[supernova]], observe our [[Moon]], and document the phases of [[Venus]]. He also located [[sunspots]]. Some of these discoveries helped support a [[heliocentric]] system.