Galilean Moons

Which is not a ‘Galilean Moon’?

[A] Mercury
[B] Europa
[C] Io
[D] Ganymede

Galilean Moons

The four moons are Io, Europa, Ganymede, and Callisto, in order of distance from Jupiter.

1. 67 moons orbit the great gas giant Jupiter
2. Four largest are known as the Galilean moons
3. Discovered by Galileo Galilei using his telescope in 1610.