galilean satellite

Noun
  1. is a type of: satellite - any celestial body orbiting around a planet or star
    specific instances:
    • callisto - the second largest of Jupiter's satellites
    • europa - the 4th largest of Jupiter's satellites; covered with a smooth shell of frozen water
    • ganymede - the largest of Jupiter's satellites
    • io - the closest of Jupiter's moons; has active volcanoes
    same as: galilean

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