Humanity's ideas about aliens have been evolving for millennia – but in the era before television, they were considerably stranger. In October 1961, Betty and Barney Hill sat down with an astronomy ...

In the 2016 science fiction movie Arrival, a linguist is faced with the daunting task of deciphering an alien language consisting of palindromic phrases, which read the same backwards as they do ...

An eco-masterpiece, icy intrigue, cyberpunkish cyborgs, memory-eating aliens and super-fast travel sends the world spinning out of control ...

Alien lifeforms are likely to have evolved their own unique ways of communicating, so how might humanity communicate with them if ever make contact? "We know where to look. We know how to look." ...