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Euronews
Euronews
Theo Farrant

Everything we know about 3I/ATLAS: The confirmed comet speeding through our Solar System

On 1 July 2025, astronomers using the ATLAS (Asteroid Terrestrial-impact Last Alert System) survey telescope in Rio Hurtado, Chile, detected a faint, fast-moving object unlike anything seen before.

The discovery, officially named 3I/ATLAS (C/2025 N1), marks only the third confirmed interstellar object ever observed - after ʻOumuamua in 2017 and 2I/Borisov in 2019.

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