UFO sightings

The latest developments bring to mind the plot of the 1977 movie, Close Encounters of the Third Kind, written and directed by Steven Spielberg and starring Richard Dreyfuss, where aliens begin to make their presence felt to humans

Is there a 'mothership' out there sending probes to Earth?
IT sounds like the plot of a Hollywood blockbuster, but it is in fact real life - officials at the Pentagon said in a document released earlier this week that aliens could be visiting our solar system from a "mothership" in our solar system.