“Water vapor was found in the atmosphere of K2-18b, one of hundreds of “super-Earths”—worlds ranging in size between Earth and Neptune – documented in a growing new field of astronomy devoted to the exploration of so-called exoplanets elsewhere in the Milky Way galaxy.
More than 4,000 exoplanets of all types and sizes have been detected overall.
The latest discovery was reported in research by a team of scientists at University College London (UCL) published in the peer-reviewed journal Nature Astronomy.”