On July 1st, 2025 , 3I/ATLAS became the third known interstellar object (ISO) to pass through our Solar System. By October 30th, it made its closest pass to the Sun, disappearing behind it from Earth's point of view, and began making its way out of the Solar System. As of April, it passed beyond the orbit of Jupiter and is well on its way back to interstellar space. Over the many months during which it was observed by multiple missions and ground-based telescopes, scientists collected extensive data on this ISO, which has proven quite revealing. One such mission was the NASA/ESA/CSA's James Webb Space Telescope* (JWST), which observed 3I/ATLAS on August 6th, 2025, observing a coma largely composed of carbon dioxide . And now, a team led by Caltech researchers has examined the mid-infrared signatures emitted by 3I/ATLAS as it approached the Sun to learn more about the environment in which it formed.…