An article published in “The Astrophysical Journal” reports a study that proposes a new type of habitable planet that was named Hycean. Nikku Madhusudhan, Anjali AA Piette, and Savvas Constantinou of the British University of Cambridge’s Institute of Astronomy started from the study of the exoplanet K2-18b to argue that some planets with conditions between those of super-Earths and mini-Neptunes can be covered in oceans and have hydrogen-rich atmospheres offering the possibility of developing carbon-based life forms. These Hycean planets could potentially be habitable even orbiting outside what is commonly considered ​​a star system habitable zone.