The Vatican And Alien Life

A challenge, to say the least:

In the Christian scheme of things, the mortality of man, and his hope of immortality, spring from specific acts of individual men; original sin springs from the disobedience of Adam, and redemption from the crucifixion of Christ. Once we introduce other worlds into the Christian scheme, inhabited not by angels but by created beings like men, what becomes of the acts of Adam, or of Christ? How can anything that was done on Earth, for good or ill, have any significance for any world but our own?