The biggest four were discovered by Galileo. They are :
Callisto
Europa
Ganymede
Io
If you mean the moons of the planet Jupiter- there are 67 moons in total. 53 of them have names. 14 do not (yet) have a name. That's a lot of moons- but Jupiter is a BIG planet.
one of them is LO
64
63 moons 49 named don't know the names sorry and 14 unnamed
The four large moons on Jupiter, or Galilean moons for the astronomer who discovered them, are called Io, Europa, Ganymede, and Callisto.
Jupiter has 63 moons discovered to date. Some names of Jupiter's moon are Io, Europa, Ganymede, Callisto and many more.
Europa, Io
Jupiter has four large moons known as the Galilean moons. These moons are Io, Europa, Ganymede, and Callisto. They are considered important because of their size, unique features, and potential for scientific study.
Jupiter's count of moons is currently at 63. The four most important moons are Ganymede, Europa, Callisto, and Io.
The most common moons of Jupiter are the Galilean moons: Io, Europa, Ganymede, and Callisto. These moons were discovered by Galileo Galilei in 1610 and are among the largest moons in the solar system.
They are the largest of Jupiter's moons and were discovered by Galileo in 1610.
One of the moons was Ganymede, the biggest moon in the solar system.