The first black hole picture reminds me Elon Musk's quote


It made me wonder what currency shall we use in that bar on Mars. Will it be fiat or cryptocurrency? Will there be a heated fight whether the bar tender shall accept USD or RMB? Is there an ATM for converting AUD to BTC?

Full article is https://support.jinance.com.au/hc/en-us/articles/360000906595-What-currency-shall-human-use-when-colonizing-Mars