Multiple choice general knowledge science & technology

Europa, Ganymede, Callisto and Io are moons of which planet?

  1. Mercury

  2. Uranus

  3. Neptune

  4. Jupiter
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Europa, Ganymede, Callisto, and Io are the four Galilean moons of Jupiter, discovered by Galileo Galilei in 1610. Mercury is a planet, not a moon of other planets. Uranus and Neptune have different moon systems.

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