Ganymede and Io have an average surface temperature of 110º K (-163.15º C), Europa's is 103 K (-171.15º C), and Callisto's is is 134º K (-139.15º C). We know little about the temperature of the ocean's beneath the ice on Ganymede, Europa, and Callisto, however we can guess that there is some kind of heat generated from tidal heating.
jupiters ice moon is Io
Europa is Jupiters moon.
Jupiters moon is thought to contain microscopic ice crystals but this theory has not yet been proven
Jupiters moon Ganymede
Can
Jupiters biggest moon is Ganymede
Obviously not, Europa is a moon, not a star.
Jupiters Moons
the answer is booty
s/2003 sin
Me in July
Galilao mapped the moon and saw jupiters moona