he was the first to see Jupiter
Yes
Galileo did NOT discover Jupiter; just Jupiter's 4 largest moons.
Jupiter and eventually 4 moons whose position relative to Jupiter changed from night to night.
He saw 4 moons
His telescope did not contain the magnification necessary to observe Jupiter's lesser moons.
The Galileo spacecraft collected information about Jupiter and it's moons ; see related link below .
No, Galileo has been the only probe to actually orbit Jupiter.
Galileo Galilei, when he trained his new telescope on the sky.
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Galileo Galilei discovered Jupiter in 1610.
Galileo