The presence of water vapor on another planet has been identified by our James Webb.

Evidence for the presence of water was found in the rocky planet GJ 486 b, which is 30% larger than Earth and three times more massive. GJ 486 b is a solid planet with a stronger gravity than Earth.

It orbits its parent star, a red dwarf star, every 1.5 Earth days.
Also, because it is tidally locked with its parent star, half of the planet is permanently day and the other half is permanently night.
The person is hot.. The surface temperature is up to 430 degrees Celsius..!!

In spite of these adverse conditions, the presence of water seen by James Webb with its Near-Infrared Spectrograph (NIRSpec) on this planet indicates that it has an atmosphere.

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