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Galileo Galilei

Galileo observed the double star Mizar in Ursa Major in 1617

1617
Italy

Galileo observed the Milky Way, previously believed to be nebulous, and found it to be a multitude of stars packed so densely that they appeared from Earth to be clouds. He located many other stars too distant to be visible with the naked eye. He observed the double star Mizar in Ursa Major in 1617.


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