Planet X or Nibiru is believed by many to be a cataclysmic planet, brown dwarf or entire star system that orbits the Sun every 3,600 years. Purveyors of the debunked conspiracy theory await the day Nibiru will arrive near Earth to herald the imminent death and destruction of mankind. According to many social media reports Nibiru has been visible from Earth for many years now and a video shared this week to YouTube claims to show the Wormwood system over Japan.