Earth-sized #exoplanets must possess at least 20% to 50% of the water volume found in Earth's oceans to maintain the critical natural climate cycles required to sustain surface water and support life. Planets with limited surface water—often classified as desert worlds—are highly unlikely to remain habitable, regardless of their position within a star's habitable zone.
#Astrobiology #PlanetaryScience #EarthScience #SpaceSciences #Exoclimatology #sflorg
https://www.sflorg.com/2026/04/ps04152601.html