There would have been a time when the idea of using your annual leave to visit space would have been laughable. It would have simply sounded like something from a science fiction novel. But perhaps not for much longer… With humans now permanently inhabiting the International Space Station and commercial flights to the cosmos soon to become something of the present, trips to outer space are looking likely to become the norm sooner than we think. Once we’ve come to terms with the idea of going on interstellar holidays, or even living in space, one interesting question springs to mind. How would we pay for life’s essentials? It’s safe to say that none of our existing payment solutions on Earth will work in space. Cash wouldn’t be a convenient solution; watching the money float away into the solar system when you open your wallet would be less than ideal. While chips and magnetic strips on credit cards would be rendered unusable thanks to the radiation in space. Using an internet-based payment solution is the most likely option. But unreliable connectivity is the biggest issue, and sending and receiving information from earth would be impractical because of the vast distances. We would most likely need an entirely new solution. But before we delve into the specifics of splashing our cosmic cash, there would need to be an entirely new currency.