Comet 3i/Atlas is the third known object from outside our solar system, ever to be discovered. It was first reported on July 1st, 2025 by a NASA funded observatory, the Asteroid Terrestrial – Impact Last Alert System (ATLAS) in Chile.
Comet 3i Atlas will pass just inside the orbit of Mars, around October 30th, 2025. It is traveling at 137,000 miles per hour, 221,000 kilometers per hour or 61 kilometers per second.
