Bitcoin can be the one and only currency that Martians will use...that is if Elon Musk will approve of the idea. Just imagine being able to send bitcoin to someone you know living in the terraformed Mars...that will be so epic and so futuristic. The only problem is that we still don't know how the idea of going and permanently living in Mars can proceed. Let's see if Elon Musk can indeed pull off this dream of leaving the Earth and arriving at Mars for good. So why not: Bitcoin for Mars not just for Earth!