Après sa découverte par le calcul de la planète Neptune en se basant sur son influence gravitationnelle sur les mouvements ...

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Researchers found the south polar region darkened in winter shadow, while the north polar region brightened as summer came.

As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region ...

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...