Mystery Case Files · Record 23‘Oumuamua: The Interstellar Visitor We Observed Too LateIt arrived from interstellar space, changed brightness dramatically, accelerated slightly beyond gravity, and showed no obvious coma. I investigated how much mystery belongs to the object—and how much belongs to our late, fading view.SettingThe inner Solar System, discovered outbound by Pan-STARRS in HawaiiPeri..