Journey Into Space: Gravity, Orbits, and Collisions
Space Astronomy and Space
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Diameter: 89,000 miles across
Location: 5th planet from Sun
Distance from Sun: About 483 million miles
Number of Moons: 63
Orbital Period: 12 Earth years
Characteristics: 63 known moons -- the most of any planet
Identity in Mythology: Jupiter, the king of the Roman gods

(Image: Grolier Interactive)
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