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Since the invention of the telescope, astronomers have been hunting for objects in our Solar System in particular and more recently, for the theorised 9th planet. Observations of Kuiper Belt objects suggest a large object might be lurking in the depths of the Solar System but to date, it hasn’t been directly observed. A team of researchers have analysed infrared sky surveys and found 13 objects that matched the estimated flux and motion of Planet Nine! Further analysis ruled out 12 leaving a single object. Is this Planet Nine?
