Stephen Hawking has always been interested in the universe and other life forms existing outside our own planet. However, his interest is coupled with caution as he foretells a potential alien incursion possibly happening in the near future. The great British physicist has been very vocal of his claim of extra-terrestrial existence beyond our reach. That is why has been cautioning the move of humankind to communicate with possible alien species in the vast universe or even multiverse. According to Hawking, the idea of revealing our presence to other highly technologically advanced civilization in the outer space can be likened to the first encounter of the Native Americans with the group of Christopher Columbus. And "things did not turn out so right," NDTV quoted Hawking as saying. Hawking also mentioned in his latest online film, "Stephen Hawking's Favourite Places," that man should be wary of the signals that we might pick up from other planets, much more answering those signals.