Archived observations appear to show a moving object in the far-distant outer solar system, but its reality is unclear ...
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Rubin Observatory finds backward-orbiting world; Neptune flip or interstellar capture suspected
Rubin Observatory found R631, orbiting at 142 degrees -- the most extreme backward orbit on record. Origin may be Neptune ...
June 3, 2025 Astronomers have revealed new research showing that millions of new solar system objects are likely to be detected by a brand-new facility, which is expected to come online later this ...
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