Why is Callisto often considered the most favorable Galilean candidate regarding Jovian radiation?

Answer

It orbits further out, placing it on the edge of the most intense radiation zones.

Callisto's distance from Jupiter results in significantly lower radiation flux hitting its surface compared to the closer Galilean moons like Europa and Io, reducing the immediate need for heavy radiation shielding infrastructure.

Why is Callisto often considered the most favorable Galilean candidate regarding Jovian radiation?

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