Cosmic horror: These are science fiction's most terrifying alien racesBy otako_fzbgs4 / November 8, 2025 Move over Xenomorph — these are the most mind-bendingly terrifying aliens in fiction. Related posts: Catch solar bursts in new citizen science project Sped-up simulation of Hera’s Mars flyby Hera asteroid mission’s Mars flyby Watch live: Images from Hera’s Mars flyby
