the answer to your question is a little futuristic and a bit science fictiony!
we can bring bitcoin as a currency to other planets as soon as we actually went to those planets and also we could colonize these planets! right now an astronaut going to outer space does not need a currency! they are not shopping up there to need it
and i am sure by them the form of currency has already changed into crypto.
Space travel is supporting bitcoin payments. The Virgin Galactic was founded by renowned Bitcoin enthusiast Sir Richard Branson. The team has built its own spacecraft that can handle human space flight operations and small satellite launches.
As a forward-thinking company, Virgin Galaxy believes that using bitcoin as a space payment is a matter of course.