Well what this webpage shows is that some "alien" lifeform is replying to the transmission sent out in 1974. Communicating to us that they have a different DNA structure, that they have big heads and that they communicate via telepathy.
The speaker of the course that we attended feels that these are not aliens but rather demonic/evil forces trying to mislead us into believing that there is such a thing as aliens. In the Bible, these forces are refered to in various places as "gods and goddesses of the air".
Taken in a wider perspective, they are just feeding mankinds' preconceived notions of what aliens are like etc. Notice how people's general perception of aliens are beings with short bodies and big heads and eyes? The aim of all these being to conceal their real identities and to deceive us into thinking they are something else. Kinda like X-files isn't it?
If you go back into the history of different cultures, there are different examples of beings with the ability to fly even before the advent of aircraft. I can't remember the specifics but one example would be the Eyptian "god of the wind and ruler of the air" Amun-Re. These demons adjust their appearances to conform to the myths and culture of the era. Which in our time are flying saucers and aliens. Could there be a kernel of truth in these myths? For what was once history with time becomes legend and legends become myths.
(made by human leh......). I have the video clip for that 
