This NASA handout illustration released on May 28, 2024 shows an ice-encrusted, Earth-mass rogue planet drifting through space alone. The Euclid space telescope has discovered seven more rogue planets, shining a light on these dark and lonely worlds, which float freely through the universe untethered to any star. Without being bound to a star -- like the Earth is to the Sun -- there are no days or years on these planets, which languish in perpetual night. (Photo by NASA’s Goddard Space Flight Center / AFP)
