Ancient aliens - 1 - History Channel (9 blocks) (HD) (Extraterrestres en la antigüedad - Canal Historia - Alta definición). Produced by Prometheus Entertainment for History 2009 narrator Robert Clotworthy. Erich Von Däniken present this amazing documentary. Earth may have been visited by extraterrestrials/aliens in the history and evidence of the visitations may be found around the world. What if life on Earth began in outer space? Millions of people accept the theory that intelligent life forms visited Ear