Have you ever thought these aliens may be a demonic force. I challenge the people who are believers in Christ to speak out the name of Jesus the next time these encounters happen and just see what happens. I have had encounters since I was around 17 and I am 38 now. When it first started I had no idea what it was, I got saved about 11 years ago and had a talk with a very wise pastor (got lucky). She advised me that this is common and has happened to lots of people and still does. It continues to happen unless you learn to cut it off. She told me to speak out the name of Jesus. Since I had the sleep paralysis with the encounters at first I would just concentrate on the name of Jesus but then it would rise up and I could speak it. Instantly the force would leave me. I am not a preacher or pastor. I think 98 % of most churches don't know what the heck they are doing. But I know Jesus is real. Atleast I know this works for me and the more I study about this sort of thing. It seems to work for a lot of others that are tormented with the same encounters.