Question

in what year did Galileo first use an optical telescope to study the moon ???
=》》》1492
=》》》1611
=》》》1212

Answer 1

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In 1611, using this early version of the telescope, Galileo became the first person to record observations of the sky made with the help of a telescope. He soon made his first astronomical discovery.

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Answer 2

In 1611 Galileo Galilei first used an optical telescope to study the moon.