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@IlDiavolo
@Tradesecret
Here are my two cents.
There is no such thing as intelligent life (aliens) outside Earth. There is no proof. Only hear-say and odd happenings.
Now, there has obviously been something happening. Abductions, devices planted, UFO sightings, etc, but this does not mean that these happenings have been done by an extra-terrestrial race. Which one of these happenings could NOT be done by our own human race? We abduct, we plant devices and we create new war machines all the time.
Our advances on science have been extraordinary and the idea of anti-gravity has been researched since the 1960's. We have heard the saying that our flip phones today have more technology in it than the moon lander from 1969. How hard would it be to think that the "flying saucer" is not just another piece of technology from the Pentagon or Kremlin or China or whatever?
The idea of abductions can be easily explained when you do some research into the field of mind control. Our brains work with electrical impulses through neurons. How hard would it be for a government agency to send the correct electrical current to the portion of the brain that controls a person's perception to make them think they are being abducted? They have experiments done to them and the probing is just the disgusting way they enjoy ending their mission. The devices planted have been known to track and hear what the person is saying and in some cases, know their thoughts.
As for visitations, it wouldn't be hard to dress up the part OR it is possible people do have visitations from demons or angels.
So all in all, aliens are a government sham. They are feeding junk to the public and raking in billions of dollars for "research" like the SETI program, which has stated that they still have not found anything regarding alien life.
Ildiavolo, to answer your question, would it affect Christianity if aliens were found to be true? Doubt it. The religion is not based on that there is not alien life but rather that there is a God who died for us. And if aliens do exist, God created them too (animals) and gave us (humans) dominion over them also. The idea of alien life is very fun to think about and super fun to hear stories of abductions and visitations and UFO sightings, but in the whole scheme of things, it doesn't erase God out of the picture.