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Evidence of controversial Planet 9 uncovered in sky surveys taken 23 years apart

If the object really is Planet Nine, it would be larger than Neptune and exist 700 times further from the sun than Earth.

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Astronomers may have just found the first real clue to Planet Nine | The research team leveraged a 23-year gap between the IRAS and AKARI infrared all-sky surveys. This large time separation allowed them to search for slow-moving objects. They found 13 objects and narrowed it to 1.

‘Extraordinary claims require extraordinary evidence’ − an astronomer explains how much evidence scientists need to claim discoveries like extraterrestrial life

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