Comments: If aliens are evil spirits then why would their not be a veil over them? We don't go around our daily lives seeing evil spirits so why if we did would they be aliens? I've read description of evil spirits and they don't look like aliens they look like angry regular people.
Neal A. Maxwell on people being on other planets:
If other beings do exist I suppose they would be another creation of heavenly father and would be subject to whatever covenants they had made with them.
Comments: This is something I'm not certain about. Didn't Joseph Smith say there were people living on the moon?
EAG, we have to assume that others would following the SAME plan of salvation. Even more we assume they would be created in the image of God (Thus look the same).
The point of having faith in OUR Father in heaven is because 1. He Followed a plan of salvation to some degree that allowed him to become God. (He knows what he is doing, and thus we can turn to him for help) 2. God knows all, and would know that there isn't a better way to save his children. If there was a better way, then why doesn't God do it? Or why didn't God know about it?
This means the plan of salvation that our our Heavenly Father came up with, is the same Plan of Salvation that has always been used. You can't make it any better.
Part of the Plan of Salvation is 1. A Spiritual Creation. That this earth and everything on it was created spiritually. 2. Man is created in the image of God.
So the only way to ever have some strange alien race would be that at some point in time there was an Alien God. And that Alien God created people in his image. That goes down a path that doesn't fit.