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Worldbuilding

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    $\begingroup$ "But the big question is, is the extra distance worth it?" - no no no that's not the big question! The big question is: Is the gravity well depth worth it?. For some reference, see this xkcd. $\endgroup$
    – Mołot
    Commented Oct 3, 2016 at 20:01
  • $\begingroup$ The whole asteroid belt has a mass just about twice as large as Charon, which has a volume of around one billion cubic kilometres. I don't think there is quite as much water in it. PS.: The poles of Mercury are full of water. $\endgroup$
    – Karl
    Commented Oct 3, 2016 at 21:42