Two Exoplanets Identified as Potential Water Worlds, with Deep Oceans and Thick Atmospheres
Two exoplanets located 218 light-years from Earth, named Kepler-138c and Kepler-138d, may be water worlds consisting of deep oceans and thick, steamy atmospheres surrounding a rocky-metallic interior. This is the first time planets have been identified as water worlds, a type of planet that astronomers have long theorized to exist. The composition of exoplanets, or …
