He discovered that Saturn has rings and he discovered Jupiter's four largest moons.
Galileo
Galileo
Probably Galileo Galilei (Astronomer and Physicist, 1564 -1642)
he was an astromometor he studied the stars so he would need the telescope to look at the stars
Galileo
Galileo DID NOT discover Mars. Mars has always been visible from Earth to the unaided human eye and was known to and named by our ancient ancestors. Galileo is believed to be the first person to view Mars though a telescope in 1609.
How long did it take Galileo to make the first telescope?
Galileo wasn't the first to make a telescope but he discovered the telescope at the age of 46.
The first person to look at the night sky with a telescope and record what he saw and try to make deductions from his observations was Galileo Galilei. Galileo had a difficult personality and he tried to assert that he was the only person allowed to make astronomical discoveries with a telescope, but, putting that aside, he was a serious scientist who made several important discoveries in physics.
Galileo Galilei . He only helped support the theory through his observations , he didn't invent the model, Copernicus did.
Why, the telescope, of course! Using his telescope, Galileo was able to make observations of the heavens in a way no one else was able to before.
His dad inspired him to make a telescope.