I grant that aliens are a possibility (and think it would be cool if they were somewhere beyond the horizon sucking oxygen, or whatever else aliens inhale). Yet I still believe Christianity is objectively true, and I trust I would even if Thor himself showed up on my doorstep. Let me explain why.
The Coherence of Faith: 4 Reasons to Read [and Trust] Your Bible
"Without Jesus, the Jewish Scriptures are a disjointed collection of historical happenings, contrived imperatives, and empty promises. With Jesus, unity abounds."