Out of curiosity, which return to Kerbin would be cheaper; from a 60km orbit around Duna, or a 10km orbit around Ike?
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I am also rather tickled that this thread has fostered such a prolonged mathematics discussion, despite the fact that I would find it very very frightening if I were compelled to attempt any of these resolutions!
Let one and all feel free to interject their miscellaneous math musings below and here-in.