Interstellar Comet 3I/ATLAS: A Visitor from Beyond the Solar System
3I/ATLAS was first spotted on July 1, 2025 by the ATLAS telescope in Río Hurtado, Chile, and officially designated 3I/2025 A1 (ATLAS), the third confirmed interstellar object after 1I/‘Oumuamua (2017) and 2I/Borisov