Interstellar comet 3I/ATLAS discovered in July 2025 Observed by JWST and Hubble telescopes Comet originated from Milky Way's thick disk Estimated age: 7 billion years, older than Solar System Nucleus under 5.5 km with large bright coma CO2 to water ratio 8:1, 16x higher than typical comets Formed near carbon dioxide ice line in protoplanetary disk Observations continue until October 2025.