Galileo is the first person known to have seen the four largest moons of Jupiter. It took much better telescopes than Galileo's to see the myriad smaller bodies that orbit the largest planet.
The current count of moons of Jupiter is 63, but there are certainly others too small to see using our current telescopes. And this doesn't count the smaller bodies which make up Jupiter's partial ring system.
Well water is found on Mars, and some of Jupiters Moons
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.
it's moons
== ==
Socrates, Gallileo
Jupiters Moons
they did found water on mars. and one of jupiters moons maybe.
jupiters moons are different some have an atmosphere and MOST are asteroids
Europa has frozen oceans.
Io
Lo Europa and Ganymede