When they come? Or if they come?
I'm reminded of the saying from the movie
Contact "The universe is a huge, and it'd be an awful waste of space if we were the only ones living in it."
I personally believe in the form of alien life... however not to the sci-fi extent where they have protruding eyes and small body frames... I'm sure that there are some primitive organisms in other planets and that one day these organisms will develope into a more advanced life form (like we human beings). Whether they have already or not is just a speculation at this point in time.
The belief is that the Bible is the word of God... and that if there is something that is missing from the bible , then present-day followers will have a hard time to grasp the dealings that is to come - if indeed they do come. But I'm sure you can understand that God will be the ultimate ruler in their eyes... believers will speculate that God created the Aliens too, even.
Just speculation at this point in time... you might want to consult a priesthood for more definitive answers though - I'm kind of a non-religious guy myself - I mean I believe in God - I just don't know why, so when those people knock at my door and try to convert me, I'm confused as to what is really going on :Q... they realize this after a few minutes then leave me w/ my forums
)(GG)