"Exoplanet K2-18b: Shifting from Water to Magma"

Data from the James Webb Space Telescope (JWST) suggests that the hycean exoplanet K2-18b may have a molten surface rather than a watery ocean, challenging previous assumptions about its potential habitability. The study, published in The Astrophysical Journal Letters, indicates that the planet's high temperature may make it too hot to host an ocean, with evidence supporting the presence of a molten surface. The research team emphasizes the importance of considering planetary temperature in the search for habitable exoplanets and highlights the potential of JWST data for future studies.