Interstellar Comet 3I/ATLAS Left a Trail of Methane in its Wake Astrobitica April 23, 2026 1 minute read A new analysis of data obtained by JWST on 3I/ATLAS as it was on its way out of the Solar System (in December 2025) showed that its interior is rich in methane ice. About the Author Astrobitica Administrator Visit Website View All Posts Post navigation Previous: Milky Way’s ‘little cousins’ may hold clues about infant universeNext: New Research Reveals That Interstellar Comet 3I/ATLAS Formed in a System Far Colder Than Our Own