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First step has been annouced :)
https://calvinayre.com/2016/12/20/bitcoin/nasa-petitioned-create-bitcoin-wallets-trading-mars/
but keeping Bitcoin private key at Mars is not solution that satisfying Martians.
Even light need a few minutes to get from the Earth to Mars and than another minutes to get back.
What about having a full bitcoin node and mining from the red planet? Is it possible to scale bitcoin? Is it possible to make it usable from the other places of our solar system and still keeping the nodes equals? What do you think? Or... do we just need to switch to other solution than bitcoin?