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Jupiter Menu  

Io, a moon of Jupiter

Classification
Natural satellite of Jupiter
Average distance from Jupiter
421,700 km
262,032 miles
Diameter across equator
3,643 km
2,264 miles
Time to orbit Jupiter
42 hours
Year of Discovery
1610
Origin of Name
In Greek mythology, Io was a priestess of the goddess Hera. Hera was Zeus? (Jupiter?s) wife but Zeus fell in love with Io. To avoid upsetting Hera, Zeus turned Io into a cow. The name for the moon Io was first suggested in 1614 by Simon Maurius who made e
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