Newslink: Discovery! Water Vapor — and Likely Clouds, Rain, Too — Found on Strange Alien Planet

In a major first, scientists have detected water vapor and possibly even liquid water clouds that rain in the atmosphere of a strange exoplanet that lies in the habitable zone of its host star about 110 light-years from Earth.

https://www.space.com/water-vapor-rain-clouds-exoplanet-k2-18b.html