Great research. There is one thing that those in the forefront of UFO research never talk about or consider or I have never heard them talk about. Something that I have thought about a lot and so I will talk about it here now. We as human beings are made or you could say designed the way we are to be suitable for our environment. That is why we have eye brows, eye lashes, nasal hair and so forth, these parts of our bodies are made for our environment which is dusty, these parts of the body help to stop the dust from getting in our eyes, ears, nose and such. If you now consider the Alien Greys, they do not have any facial hair or body hair for that matter at all. In fact their bodies are very smooth and soft, as if not exposed to any elements at all. Many people say that the Greys come from another planet, if this was the case it would not be an all gas planet, it would have to be a planet that was solid on its surface. This would mean that there would most likely be rocks, dirt and dust, going by their design I believe that they are not made for that kind of environment and so taking this on board rules that out. So going by how these Greys are made, I would say that they do not come from a place that is dusty, windy, with dirt and rock. This to me leaves only three options that I can think of as to where they could and most likely come from and that is.....Inner Earth, Deep Under The Ocean or Another Dimension.