when is 3i atlas coming to earth

Direct answer: 3I/ATLAS (a confirmed interstellar object) is passing through the inner solar system in late October to December 2025, with its closest approach to Earth occurring around mid-December 2025. It was discovered in July 2025 and is tracking on a hyperbolic trajectory that will carry it back out of the Solar System after its pass near the Sun and Earth. Observational updates indicate the object will be at its perihelion near the end of October 2025 and will continue to move away from the Sun, with Earth-distance closest approach projected for December 2025.