Simply put, this chemical molecule has never before been detected in this specific fashion outside of our solar system. Even in 2008, when James Webb’s predecessor, the Hubble Telescope, made a comparable finding in the atmosphere of an exoplanet designated HD 189733b, this had not been definitively validated until that point. The exoplanet WASP-39b was discovered in 2011, and the Hubble and Spitzer telescopes found water molecules in its atmosphere in 2018. This exoplanet has a surface temperature of around 900 degrees Celsius, and its atmosphere would contain almost three times as much water as Saturn’s. Even though WASP-39b is approximately 1.3 times the size of Jupiter, it only has a fourth of its mass. The scientific publication Nature will publish James Webb’s findings of the exoplanet WASP-39b on August 29, 2022. One of the pieces of equipment on board the telescope, the near-infrared spectrograph, might be used to find CO2. The telescope’s sensitivity allowed for a thorough investigation of the atmosphere and the identification of light fluctuations that indicated the existence of molecules like carbon dioxide. On this exoplanet, there isn’t much to suggest a tranquil existence, however. The high levels of carbon dioxide are not necessarily suitable for forming a climate that supports life because of the high average temperature. In any event, James Webb has made a fantastic discovery by allowing this.