The "James Webb" telescope has first directly detected secondary carbon dioxide on planets outside the solar system, allowing for a better understanding of their compositions. In 2022, "James Webb" managed to note the secondary carbon dioxide, which is a biologically important element, on the planet WASP-39 outside the solar system, but this was found to be indirect. The telescope used the method of transmission, capturing a faint change in brightness caused by the planet passing in front of the star, and analyzing the light "filtered through" its atmosphere. Since different molecules in the atmosphere leave specific signatures, this allows determining their composition.
A group of American researchers this time utilized the capabilities of the "James Webb" telescope, dubbed "coronagraphs," which allow to block out the bright light of the star for improved observations of its surroundings. The main focus was placed on gas giants of the four-planet system "HR 8799," which is located 130 light-years away from Earth.
