How would Bitcoin work if there was a human settlement on Mars? And further away? The time it takes for electromagnetic waves traveling at the speed of light though open space is between 3 and 22 minutes depending on the relative position between the Earth and Mars. So for example, Mars miners would be at a great disadvantage at first! And reorgs (chain forks) would occur more often. For regular transactions, it would just mean higher waiting times for Mars users. But Lightning Network path finding... Probably impractical! What if there's a human (or another intelligent life form) settlement further away? As in weeks or light years far? Should each 10 light minute radius area get their own coin? And then the market does its thing setting the exchange rates? Or?