3I/ATLAS, the third known interstellar object to cross our Solar System, was first spotted on 1 July 2025 and immediately became a magnet for speculation. It was discovered by the Asteroid Terrestrial ...
The most sensational story of the year for astronomers has been the discovery of the comet 3I/ATLAS, which was first observed on July 1, 2025 by NASA's Asteroid Terrestrial-impact Last Alert System ...
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