In today's Love Letters to... Alicia ponders the nature of love and identity through the lens of Pluto, our solar system's recently "reclassified" dwarf planet. It turns out that Pluto's incessant and requited flirtation with its moon, Charon, meant that teasing out which of these bodies is the planet and which is the moon is more complicated than astronomers thought. Planet or moon, the two will be circling each other until time itself ends, a romance for the ages.

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