Sky Wonders on Instagram: "It was expected to fade. Instead, Comet 31/ATLAS erupted on its way out of our Solar System. NASA’s SPHEREx detected a delayed burst of water vapor and carbon-rich molecules—ancient material locked beneath its surface for billions of years. A rare interstellar visitor, now gone forever, but the chemistry it revealed could reshape how we understand other star systems. #NASA #SPHEREx #InterstellarObject #SpaceDiscovery"