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Galilean satellites

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plural noun Astronomy.
the four largest and brightest moons of Jupiter: Io, Europa, Ganymede, and Callisto, discovered by Galileo in 1610.
QUIZ
SHALL WE PLAY A "SHALL" VS. "SHOULD" CHALLENGE?
Should you take this quiz on “shall” versus “should”? It should prove to be a quick challenge!
Question 1 of 6
Which form is used to state an obligation or duty someone has?
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

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