Scientists find strongest evidence yet of life on an alien planet

An illustration shows a hycean world – an exoplanet with a liquid water ocean beneath a hydrogen-rich atmosphere - orbiting a red dwarf star. Based on observations by the James Webb Space Telescope, the exoplanet K2-18 b might fit in this category. This illustration was obtained by Reuters on April 16, 2025.

Credit: A. Smith, N. Madhusudhan/University of Cambridge/Handout via REUTERS NO RESALES. NO ARCHIVES. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.