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Jupiter, the biggest planet in our astonishing solar system. Jupiter has 60+ known moons. But there are four main moons, Io, Europa, Callisto and Ganymede. Io is 3,630 km in diameter and is 421,600 km away from Jupiter. It is very active, and has constant volcanic eruption. Europa is 3,138 km in diameter and is 670,900 km away from Jupiter. Astronomers think that underneath its crust, it may harbor an ocean. Ganymede is 5,262 km in diameter - the largest moon in our Solar System - and is 1,070,000 km away from Jupiter. Also, this moon could potentially harbor an ocean beneath its crust. Callisto is 4,800 km in diameter and is 1,883,800 km away from Jupiter.

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14y ago

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