Solar System Survey Casts Doubt On Mysterious 'Planet Nine' - Nature

Mike Brown may have railroaded Pluto's demotion, but his hopes of replacing our icy friend with something more substantial was dealt a blow per Gabriel Popkin. Four of those six Kuiper Belt objects once celebrated as the smoking gun for Nibi^H^H^H^H Planet Nine aren't being gravitationally perturbed by something big. Either way Planet Nine remains an unironic, article of faith for mainstream astronomers. Curiouser still is there may be another Mysterious Planet Messing With The Kuiper Belt heralded by Paul Seaburn as Planet Ten! Here's to finding Planet Ten before it starts hurtling comets down the gravity well towards Earth. (CS)

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