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A 9th planet may be within reach and it’s not Pluto returning

For the first time since Pluto was demoted, the idea of a true ninth planet is edging from speculation toward something ...
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Why Pluto could be reclassified as a planet again

The debate over Pluto’s planetary status has been ongoing since its reclassification as a “dwarf planet” in 2006 by the International Astronomical Union (IAU). Recent discussions and new scientific ...