The four are the so called "Galilean" moons which Galileo discovered, the first objects besides the Moon to be found as satellites of a planet. They are larger or comparable in size to our Moon.
The names are:
Ganymede
Callisto
Io
Europa
Jupiter has about 63 moons, but the four main moons of Jupiter are Europa, Ganymede, Callisto, and Io.
Jupiter's four largest moons are known as the Galileans. They are individually named Io, Europa, Ganymede, and Callisto, named my Simon Marius in 1610. Ganymede is the largest of these four moons.
Jupiter has 79 known moons, with the four largest ones being Io, Europa, Ganymede, and Callisto.
Collectively, they are known as the Galilean moons. Individually, they are Calypso, Ganymede, Io, and Europa.
Galileo discovered four moons of Jupiter, which are now known as Galilean moons. They are Io, Europa, Ganymede and Calisto.
Galilean
Only Jupiter, the Galilean moons are the four largest moons of Jupiter which Galileo discovered.The four satellites discovered by Galileo orbit Jupiter.
Galileo was the first to observe the 4 largest moons of Jupiter (which are still known as the Galilean moons, in his honor).
Jupiter has four of the five largest moons in the solar system including the largest, Ganymede. The second largest moon, Titan, orbits Saturn.
Jupiter has about 63 moons, but the four main moons of Jupiter are Europa, Ganymede, Callisto, and Io.
Jupiter's four largest moons are known as the Galileans. They are individually named Io, Europa, Ganymede, and Callisto, named my Simon Marius in 1610. Ganymede is the largest of these four moons.
Simon Marius
Jupiter has 79 known moons, with the four largest ones being Io, Europa, Ganymede, and Callisto.
At this moment Jupiter has 63 moons and moonlets Saturn has 60
The four satellites are Jupiter's largest moons. They were found by Galileo Galilei. They are Callisto, Europa, Ganymede and Io.
There are over 59, the largest is: Ganymede.
A Galilean satellite is one of the four largest moons of Jupiter discovered by Galileo Galilei in 1610. These moons are Io, Europa, Ganymede, and Callisto. They are also known as the Galilean moons and are some of the largest and most geologically diverse moons in our solar system.