The aliens are an object of fascination given that they exist in the interstellar space. The only biological condition for support is the common universe. It is still an open consideration that the aliens might exist in the multiverse. The existence of radio-like waves could be a reality which has been undiscovered by the human race. It might not be carbon based existence. But nonetheless, there must be some common experience of the universe. In case there is no common experience, it would be tough to come across aliens in actuality. Why we have not discovered an alien life is that our empirical experience is limited in general that we still not come analogous to light in experience. Light illuminates but it could drink itself or drive itself irrespective of the source. If light is isolated from a source and the source itself is a part of light there could be a possibility of alien life.