NASA confirms the interstellar object 3I / ATLAS poses no threat to Earth, despite viral speculation. Scientists and the UN are monitoring the rare visitor to study its alien origins and composition. How do we know 3I / ATLAS , also called comet C/2025 N1 ( ATLAS ), is interstellar ? Will it strike Earth? Can we visit it? Here are all of your questions answered. Comet 3I / Atlas , only the third confirmed interstellar object to pass through our Solar System, was first discovered on July 1, 2025, by the Asteroid Terrestrial-impact Last Alert System ( ATLAS ) in Chile. A rare cosmic visitor, 3I / ATLAS , the third confirmed interstellar object , was discovered in July 2025. This object , on a hyperbolic orbit, originated from beyond our solar system and will depart ...