"Even if a planet is in the habitable zone, if it has too small a water inventory, it transitions to an uninhabitable state."

Desert planets like those in 'Dune' and 'Star Wars' unlikely to host life, NASA says

Source: space
Source Link: https://www.space.com/the-universe/exoplanets/desert-planets-like-those-in-dune-and-star-wars-unlikely-to-host-life-nasa-says