Galileo was the first to look at the planet Jupiter through a telescope, and to observe the moons of Jupiter (the 4 largest moons are still known as the Galilean moons).
Galileo observed Jupiter's moons and Saturn's rings with the help of telescope
jupiters ice moon is Io
we can't use jupiters moons for anything because fistly we can not get out that far to reach Jupiters moon and if we could it would take thousands of years and Jupiters Moons would be to big to do anything with anyway. so the answer to What could Jupiter's moons be used for? is....Nothing.
He found the Galiliean Moons and improved the telescope.
Socrates, Gallileo
it's moons
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Galileo looked at the planet Jupiter and observed its 4 largest moons (which are still known as the Galilean moons, to this day).
Jupiters Moons
Jupiter dosent have a surface. And if it did, you wouldn't be able to see the moons because of the 30 mile thick clouds!
Galileo used his telescope to look into space where he noticed that Nicalous Copernicus was correct in saying that the Earth revolves around the sun. Which Galileo was arrested for believing.
Though Galileo did not invent the telescope, he improved it greatly, and he used his new and improved telescope to discover and document a number of astronomical phenomenon. His work opened the door to astronomy wide, and we are fortunate he and others stepped through. An example of the power of his improved instrument was his discovery of the four most massive moons of Jupiter, and they are called the Galilean Moons in his honor.