James Webb Telescope Detects Water Vapor on Rocky Exoplanet.

The James Webb Space Telescope has detected water vapor around a rocky exoplanet located 26 light-years away, which could indicate the presence of an atmosphere and potential habitability. However, the water vapor could also be coming from the planet's host star. The exoplanet, GJ 486 b, orbits a red dwarf star and is less than a third the size of Earth. Red dwarfs are the most common type of star in the cosmos, but their violent radiation can make it difficult for rocky planets to form and maintain an atmosphere.