I hope that all of my readers will first read page 1 at the right of this post. It describes a hollow earth and explains why I believe the hollow earth understanding is true and why it is important to understand before one can truly understand the prophecies of the bible.
I put links on page 14 to the right of this post. One of these links explains the alien question very well by a very knowledgeable person who I am sure you will appreciate once you have read his whole blog.
One of the YouTube links he gives is: