KnowraK2-18bLinked fromLinked fromThe 2 pages that link to K2-18b, each with the reason it gives.All 2Broader topic 2Super-EarthBroader topic: Its size illustrates how planets near the super-Earth boundary can have substantial volatile envelopes.Extraterrestrial lifeBroader topic: Its atmosphere has been studied for possible chemical indicators, though none confirms life.