James Webb Space Telescope detects water vapor around alien planet. But where did it come from?

The paper cited, however, https://arxiv.org/abs/2305.00868 is interesting.

"Here, we present a 2.8-5.2 micron JWST NIRSpec/G395H transmission spectrum of the warm (700 K, 40.3x Earth's insolation) super-Earth GJ 486b (1.3 R⊕ and 3.0 M⊕)."

Given the radius and mass, this exoplanet has about 1.7748E+00 stronger surface gravity than Earth, escape velocity 16.98439559 or nearly 17 km/s. So this is a hot super-Earth with a deeper gravity well than Earth. There is no place like home it seems in exoplanet studies :)