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ObviousGazelle t1_jaaiwqt wrote

Reply to comment by MoreGull in The Case for Callisto by MoreGull

You forget mars has an atmosphere. Thin, but it's there. The question when choosing the two will be this: Can humans build radiation shielding good enough to live permanently on Mars, and of not then what are the trade offs because Callisto has no atmosphere for aerobraking... So which challenge is solvable first?

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Hosni__Mubarak t1_jab4b0g wrote

Can’t you use the orbital mechanics of Jupiter to aerobrake yourself?

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MoreGull OP t1_jaaj5ce wrote

Indeed. Another reason to skip Mars entirely.

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