The New Horizons flyby found evidence that Pluto—little Pluto!—might even have an ocean beneath its surface. “The name doesn’t matter,” Sanjay Limaye, a planetary scientist at the University of Wisconsin at Madison, told me. “It doesn’t matter what we call it, as long as we can explore it and learn from it.” Regardless of what we decide here on Earth, Pluto will still be there, doing its thing, blissfully unaware that some aliens a few rocks down are mesmerized by its existence.
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