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Where Newly Found ‘Ammonite’ Is In Solar System — And Why It Matters

MAUNA KEA, HAWAII, JUL 24 – The newly discovered sednoid Ammonite has an orbit that contradicts the Planet Nine hypothesis, prompting astronomers to reconsider solar system formation theories.

Summary by Forbes
The newly discovered world — a "sednoid" — challenges what planetary scientists thought they knew about the edge of the solar system.

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Forbes broke the news in United States on Thursday, July 24, 2025.
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