If they were a descendant of Adam, did God go on Mars also and be crucified to redeem them?
His one and only crucifixion on earth is more than sufficient to redeem all the descendants of Adam, even those who may not live on earth.
I wonder, before the conquistadors' missionary work, if people made your same arguments regarding the "savages" in the "New World." I'm sure they asked: Are they descendants of Adam? Are they intelligent? Do they need baptism? Etc.
Acts Of Apostles 17:26
And hath made
of one, all mankind, to dwell upon the whole face of the earth, determining appointed times, and the limits of their habitation.
The Church teaches that everyone,
human that is, will have an opportunity of grace, including "savages" which might explain why also in Acts is says:17;23 "For passing by, and seeing your idols, I found an altar also, on which was written: To the unknown God. What therefore you worship, without knowing it, that I preach to you"
Francis a formal heretic, face it!