The study reports the detection of water (H₂O), carbon dioxide (CO₂), carbon monoxide (CO), and hydrogen sulfide (H₂S) in the atmosphere of the Jupiter-like exoplanet HD 189733b. Using JWST NIRCam, the team observed two transits of the planet, detecting significant absorption features at 2.7 μm and 4.3 μm, attributed to H₂O and CO₂. The inferred atmospheric metallicity is 3-5 times that of the host star, with a low carbon-to-oxygen ratio (<0.2), suggesting formation through the accretion of water-rich icy planetesimals. The low oxygen-to-sulfur and carbon-to-sulfur ratios further support this formation pathway. The study employed four independent data analysis methods, including grid and free retrieval models, to interpret the observations. The results provide insights into the atmospheric composition and formation history of exoplanets.The study reports the detection of water (H₂O), carbon dioxide (CO₂), carbon monoxide (CO), and hydrogen sulfide (H₂S) in the atmosphere of the Jupiter-like exoplanet HD 189733b. Using JWST NIRCam, the team observed two transits of the planet, detecting significant absorption features at 2.7 μm and 4.3 μm, attributed to H₂O and CO₂. The inferred atmospheric metallicity is 3-5 times that of the host star, with a low carbon-to-oxygen ratio (<0.2), suggesting formation through the accretion of water-rich icy planetesimals. The low oxygen-to-sulfur and carbon-to-sulfur ratios further support this formation pathway. The study employed four independent data analysis methods, including grid and free retrieval models, to interpret the observations. The results provide insights into the atmospheric composition and formation history of exoplanets.