Today I LearnedEnglish • 2 days ago

TIL about Planet Nine, a hypothetical ninth planet in the outer region of the Solar System.

en.wikipedia.org

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TIL about Planet Nine, a hypothetical ninth planet in the outer region of the Solar System.

en.wikipedia.org

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Today I LearnedEnglish • 2 days ago

Planet Nine - Wikipedia

en.wikipedia.org

This hypothesized ninth planet (not you, sorry Pluto) might explain the unusual commonalities of extreme trans-Neptunian objects (ETNOs) 100s of AU from the sun. These ETNOs (such as dwarf planets and sednoids) have remarkably aligned orbits, suggest the existence of an undiscovered celestial body, dubbed Planet Nine, influencing them gravitationally.

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4•2 days ago
X is so much more than just the Roman numeral.

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