I'm not really all to sure about aliens. I mean all those stars is a sun with planets orbiting around it. Wouldnt it make sense if one of them had life on it? Intelligent Life? On the news they found a planet similar to Earth a billion years ago, it had water a temperature between -30 and +40 celcius and was full of volcanic erruptions. But this is all by speed light so maybe by the time the image reaches us there is intelligent life there and they see volcanic eruptions on Earth. Just something to ponder.