Nemesis Theory is the name given a hypothetical companion sun that supposedly orbits unknown around our solar system. Related, but far less easy to refute, is the Nibiru Theory: a theory of a Hidden Planet X that kicks up comets and asteroids toward the terrestrial planets every few million years - causing mass extinctions and our certain doom.
The 5 most interesting UFO Sightings on YouTube. These may or may not be Extraterrestrial Aliens, but these strange lights in the sky and other unknown Mysterious Sightings are by far some truly interesting UFO Sightings. Content curated by Latest Sightings 4UFOs.com.