Thanks so much for the response. It just crossed my mind and led me into thinking, are these explorations just a big scam? They could probably hire good programmers who worked for the top of the charts movies just to create a scene that they are actually doing these explorations and get all the funding they could have. and it costs Billions of Dollars which came from the pockets of taxpayers. Darn!

Another thing, I guess it's what we call faith. We believe about their existence without even being proven. And it also calls the same thing with our faith to God being tested. His existence was not yet proven as well but we do believe in Him.