Yes he did. He famously spotted moons around Jupiter using a telescope.
Galileo galilei invented the astronomic telescope Galileo galilei invented the astronomic telescope
Galileo Galilei.
Yes
Galileo Galilei.
Galileo Galilei first used the "new" telescope in 1609
Galileo Galilei
The telescope.
Galileo Galilei
Galileo Galilei's first telescope was made in the city of Padua, Italy, where he was a professor at the University of Padua.
Galileo Galilee (February 15, 1564 - January 8, 1642)
He didn't he improved the existing telescope and turned it to astronomical use around 1609
Galileo Galilei