Scientists Detect No Technosignatures From Promising Ocean World K2-18b
Hopes High After Biosignature Buzz (Image Credits: Images.newscientist.com) Astronomers scanned the exoplanet K2-18b, a water-rich world 124 light-years distant, with advanced radio telescopes but uncovered no transmissions hinting at intelligent civilizations.[1] Hopes High After Biosignature Buzz Researchers first spotlighted K2-18b in 2025 when the James Webb Space Telescope revealed methane, carbon dioxide, and tentative traces ...












