Alien Existence? Just about 500 years ago people believed that the earth was still flat, 50 years ago people doubted the existence of an alien life, 5 min ago the people of earth believe that aliens existed. Many individuals around the world have reportedly been contacted by extra terrestrial beings. They allege that Earth is currently being visited by several different species of extra terrestrial. These individuals report that extra terrestrials are visiting the Earth because they are interested in observing the development of the human species. This alone is not the only reason we believe in the existence of Extraterrestrial life and UFOs. Aliens along with UFO