Increasing popularity of cryptocurrencies and advances in space travel (SpaceX, Blue Origin, Virgin Galactic, etc.) make me feel like I’m in the 1st chapter of a science fiction series.
It's interesting that both are starting to happen at the same time. I wouldn't be surprised if one day there's a time when people budget for their trip to Mars using "credits" (a nod to whatever becomes the prominent currency of the future), over using USD or another fiat currency. I could be wrong, but nation states, institutions, fiat currencies, etc. will look much stranger than now as space travel accelerates in the next 2 centuries.