Comet 3I/ATLAS was discovered on July 1 by the Asteroid Terrestrial-impact Last Alert System (ATLAS). Its previous best ...

Comet 3I/ATLAS was discovered on July 1 by the NASA-funded Asteroid Terrestrial-impact Last Alert System (ATLAS) observatory.

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NASA is unveiling close-up pictures of the interstellar comet that's making a quick one-and-done tour of our solar system.

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“3I/ATLAS should remain visible to ground-based telescopes through September 2025, after which it will pass too close to the Sun to observe. It will reappear on the other side of the Sun by early ...

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NASA is providing more images and information about the interstellar object that's passing through our solar system right now, known as 3I/ATLAS.

On December 19, 2025, 3I/ATLAS will make its closest approach to Earth, at a distance of about 1.8 AU (roughly 170 million miles or 270 million km). This poses no threat to Earth, as the comet follows ...