Craig Charles: UFO Conspiracies - Season 1 Episode 10 -

In October 2017, astronomers at the Pan-STARRS observatory saw something strange in our solar system - an object they named ‘Oumuamua’, the very first observed visitor from interstellar space. Its highly unusual properties and inexplicable acceleration have left scientists divided, with some believing this ‘UFO’ was alien in origin. Craig and Sarah talk to Senior Astronomer Dr Seth Shostak of the SETI Institute, who shares his theories of what Oumuamua could possibly be and postulates that the very fact it entered our solar system at all is the best argument of all for it being alien.