Extraterrestrial life definitely exists, and beings from other planets have visited sightings, clearly seeing a craft, and occasionally even extraterrestrial beings.
What if aliens are AI? Cosmic life may not be organic. Extraterrestrial life · Parkes radio telescope (Copyright: Getty Images) (Credit: Copyright: Getty Images.
That's the question as Stephen Hawking's $100 million search for extraterrestrial life gets underway.