A 'Planet Nine' far from Earth could explain the odd behavior of icy bodies beyond Neptune

As the search for "Planet Nine" in the outer solar system continues, new research suggests there may be an Earth twin buried deep within the frozen waste of the Kuiper Belt beyond Neptune.

A 'Planet Nine' far from Earth could explain the odd behavior of icy bodies beyond Neptune
As the search for "Planet Nine" in the outer solar system continues, new research suggests there may be an Earth twin buried deep within the frozen waste of the Kuiper Belt beyond Neptune.