The Next Object From Another Star System Could Appear Without Warning

Tiny interstellar visitors from other star systems are increasingly entering our solar system, with the latest, 3I/ATLAS, detected in July 2025. These objects travel at extreme speeds, making them difficult to study. Astronomers are preparing for more frequent encounters by developing pre-positioned spacecraft, like the European Space Agency's Comet Interceptor, to intercept these fleeting cosmic guests before they vanish.