With Hubble, we were observing at optical wavelengths and with JWST we have access to the infrared. We also have higher resolution, higher precision, and higher telescope stability. So the data quality is much better than before!
Recently, astronomers studied, the WASP-76 and WASP-121b and found the heaviest element- Barium, ever discovered in any exoplanet’s atmosphere.
Space migration has long been considered a viable solution to address environmental problems on Earth.