New solar system world with Moon beyond Pluto

This week astronomical detective work led to the stunning discovery of a large new world beyond Pluto – and hiding in plain sight.

The object is about 70% Pluto's diameter and it has a moon.

The find suggests more such objects are waiting to be discovered and is likely to reignite the fierce debate about what constitutes a planet.

For now it is called 2003 EL61.

The discovery, coupled with other recent finds such as Sedna and Quaoar, suggests other large objects may lurk in the murky region beyond Neptune.

Learn more here:
New solar system world has a moon