The search for extraterrestrial life has so far assumed our cosmic neighbours are organic. What if we’re dealing with artificial intelligence?
For more than a century we have been broadcasting our presence to the cosmos. This year, the faintest signals from the world’s first major televised event – the Nazi-hosted 1936 Olympics – will have passed several potentially habitable planets. The first season of Game of Thrones has already reached the nearest star beyond our Solar System.