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saying it like this could lead a hasty reader to think Galileo had invented it
== His telescope and astronomical discoveries ==
== His telescope and astronomical discoveries ==
In June or July of 1609, five years after his initial discovery, Galileo heard about the telescope, which had been invented in [[Netherlands|Holland]]. Without knowing the technical details of the construction of the device, he was able to create one for himself. Over time he continued to upgrade it. He found mountains on the Moon, viewed the phases of [[Venus]], and discovered four satellites around [[Jupiter]] as well as locating [[sunspots]].
In June or July of 1609, Galileo heard about the telescope, which had been invented in [[Netherlands|Holland]]. Without knowing the technical details of the construction of the device, he was able to create one for himself. Over time he continued to upgrade it. He found mountains on the Moon, viewed the phases of [[Venus]], and discovered four satellites around [[Jupiter]] as well as locating [[sunspots]].
In 1610 [[Galileo]] used the newly invented [[telescope]] to observe [[Jupiter]] and discovered four smaller bodies revolving around it.
In 1610 [[Galileo]] used the newly invented [[telescope]] to observe [[Jupiter]] and discovered four smaller bodies revolving around it.