Planet 9
Scientists Are Now Close to Finding a Mysterious Planet That Explains Strange Cosmic Phenomena, Study Reports
Researchers have excluded 78% of the search field for the hypothetical Planet 9; astronomer Michael Brown says it may now be found within a few years.
Our Solar System Might Have a Black Hole From the Dawn of the Universe
This alternate explanation for 'Planet Nine,' proposed by scientists in a new paper, poses some fundamental questions like: Should we visit it?
Mysterious 'Planet Nine' Might Actually Be a Gigantic Disk of Space Objects
'Planet Nine' is thought to be 10 times larger than Earth, but what if it wasn't a planet at all?
NASA Wants You to Be the Rando Who Finds Our Solar System’s Hidden Planet
Crowdsourcing the search for the hypothetical Neptune-sized world at the edge of the solar system.
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