Interstellar Comet 3I/ATLAS Formed Up To 12 Billion Years Ago, New Observations Suggest Sci.News Interstellar comet may be oldest object seen in our solar system, scientists say The Guardian Interstellar Comet 3I/ATLAS is almost as old as the universe itself Scientific American NASA’s Webb Finds Clues to Ancient, Distant Origin of Comet 3I/ATLAS NASA Science (.gov) Was Methane a Signature of Life in 3I/ATLAS? Avi Loeb – Medium