A Rare Visitor From Beyond the Solar System On July 1, 2025, the Asteroid Terrestrial-impact Last Alert System (ATLAS) flagged what looked like a new asteroid. But follow-up orbital calculations revealed something extraordinary: the object was not bound by the ...
A Rare Discovery That Could Rewrite the History of Comets Astronomers have just confirmed a new interstellar object—3I/Atlas—and it may be the oldest comet ever observed. Detected on July 1, 2025, by the ATLAS survey telescope in Chile, this object ...