Early cinema depicted aliens as human-like for familiarity and practical reasons, but modern science fiction explores unrecognisable forms, challenging perception and our capacity to comprehend the truly alien.

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life.

We got tactical and stayed frosty for our preview of Aliens: Fireteam Elite 2, guided by game director Chris Cross.