New study says comet 3I/ATLAS might be oldest interstellar visitor ever Yahoo NASA’s Webb Finds Clues to Ancient, Distant Origin of Comet 3I/ATLAS NASA Science (.gov) NASA looks for the origins of interstellar comet 3I/ATLAS photo of the day for June 24, 2026 Space In July 2025, a planetary-defence telescope in Chile built to watch for dangerous asteroids accidentally became the instrument that discovered only the third interstellar object ever seen — a comet now thought to be older than the sol