Aside from earth, we can also live on mars so it is also possible to carry our bitcoins there. As long as there is internet bitcoins is also functional.
Not possible at all.
Earth <-> Mars latency is 10-20 minutes, which would break TCP/IP. 2 different chains would occur...
Therefore Mars would need Marscoin.
Bitcoin can only work on planet Earth, unless the whole humanity moves somewhere else altogether. An Earth colony far away will not be able to use or mine BTC.