New Planet?

Astronomical detective work led to the stunning discovery of a large new world beyond Pluto – and hiding in plain sight. The object could be the biggest in the Kuiper belt of rocky objects that orbit the outer reaches of the solar system.

The first data made public about the object suggested the object could be up to twice the size of Pluto, but newly revealed observations indicate the object is about 70% Pluto's diameter.

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New world found in outer solar system