Definition of Galilean moons in English:

Galilean moons

Line breaks: Gali|lean moons
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).

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Word of the day semblance
Pronunciation: ˈsembləns
the outward appearance or apparent form of something…