From Brightest to Dimmest:
Ganymede
Io
Europa
Callisto
Use JPL's HORIZONS web ephemeris to look up apparent magnitudes of jovian satellites.
Io Europa Ganymede Callisto
Ganymede is the brightest moon out of Ganymede, Europa, Io, and Callisto. It is the largest moon of Jupiter and is even larger than the planet Mercury. Ganymede's surface is composed of a mix of rocky material and water ice, which likely contributes to its brightness.
The order of brightness of Jupiter's major moons from brightest to faintest is Io, Europa, Ganymede, and Callisto. Io is the closest to Jupiter and receives more sunlight, while Callisto is the farthest and receives the least amount of sunlight, making it the dimmest of the four.
Io, Europa, Ganymede and Callisto are the four satellites that orbit Jupiter.
From brightest to dimmest, the order of brightness for the four largest moons of Jupiter when viewed from its surface is Io, Europa, Ganymede, and Callisto. Io tends to be the brightest due to its active volcanism, while Callisto is the dimmest because of its icy composition and lack of surface activity.
Io Europa Ganymede Callisto
The order of brightness for the Galilean moons of Jupiter from brightest to dimmest is Io, Europa, Ganymede, and Callisto. Io is the brightest due to its active volcanism, while Callisto is the dimmest of the four.
Ganymede is the brightest moon out of Ganymede, Europa, Io, and Callisto. It is the largest moon of Jupiter and is even larger than the planet Mercury. Ganymede's surface is composed of a mix of rocky material and water ice, which likely contributes to its brightness.
The order of brightness of Jupiter's major moons from brightest to faintest is Io, Europa, Ganymede, and Callisto. Io is the closest to Jupiter and receives more sunlight, while Callisto is the farthest and receives the least amount of sunlight, making it the dimmest of the four.
going by the magnitude scale, Callisto's the brightest. Io 5.5 Europa 5.7 Ganymede 5.1 Callisto 6.1
Io, Europa, Ganymede and Callisto are the four satellites that orbit Jupiter.
The neighboring moons of Callisto are Ganymede, Europa, and Ia.
Satelites of Jupiter
The four largest moons of Jupiter discovered by Galileo are Io, Europa, Ganymede, and Callisto.
It is Jupiter.
From brightest to dimmest, the order of brightness for the four largest moons of Jupiter when viewed from its surface is Io, Europa, Ganymede, and Callisto. Io tends to be the brightest due to its active volcanism, while Callisto is the dimmest because of its icy composition and lack of surface activity.
Europa is one of Jupiter's moons. Actally theres Europa, Callisto, Ganymade, and Io. :] Ganymede, Io, Europa and Callisto Jupiter has 67 moons, of which four are major. Those moons are Io, Europa, Ganymede, and Callisto.