I mean if there is no money or currency outside of the earth than why not use bitcoin when you go to mars and colonize it, that way you will make sure you are not using the currency that countries use and find something in between. Bitcoin does not belong to any country and it can be used by "martian" people who will go there and live, that way it can further the economy of those colonies in other planets.

However we need to make sure it is not this much volatile when that happens, we wouldn't want the first people who live outside of earth to face with insane volatility and inflation constantly when they also have other living troubles.