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There's something weird going on beyond Neptune
Past Neptune, in the outer solar system, astronomers have recently discovered a new mystery object orbiting the sun on a plane nearly perpendicular to the rest of the planets. Adding to the weirdness, the trans-Neptunian object, which has been nicknamed "Niku," is also spinning around the sun backwards, in the opposite direction of the rest of the planets. So far, astronomers have little idea what could cause such abnormal celestial behavior.
