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kaseijinyesterday at 12:45 AM2 repliesview on HN

True for all the Galilean Moons more or less. Their orbits all lie within the Jovian equivalent of the Van Allen belts. And Jupiter's magnetic field is much stronger than earth's.


Replies

sennalenyesterday at 1:44 AM

Not Callisto. Being within Jupiter's magnetosphere but out of reach of Io's shenanigans makes it one of the mildest radiation environments in the solar system.

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idlewordsyesterday at 12:58 AM

Not true at all, the daily dose on Ganymede (which has a magnetic field of its own) is ~70 mSv/day, and Callisto is 0.1 mSv/day.

Io, meanwhile, is 35 Sv/day. Location really matters among the four Galilean moons.