The four largest satellites of Jupiter (Callisto, Europa, Ganymede, and Io), discovered by Galileo in 1610 and independently by the German astronomer Simon Marius (1573–1624).
〔天文〕伽利略卫星
Definition of Galilean moons in US English:
Galilean moons
proper noun
Astronomy
The four largest satellites of Jupiter (Callisto, Europa, Ganymede, and Io), discovered by Galileo in 1610 and independently by the German astronomer Simon Marius (1573–1624).