https://exoplanets.nasa.gov/system/video_items/107_WaterWorldHiH264.mp4 Water worlds, especially if they have no land on them, are unlikely to be home to life, or at least lifewe can detect.  Some of the basic atmospheric and mineral cycles that make a planet habitable will be absent. Cool animation of such a world. (NASA) By guest columnist Elizabeth Tasker   Wherever we … Continue reading Can You Overwater a Planet?