At the Edge of the Solar System: Icy New Worlds Unveiled

On August 24, 2006, the Solar System lost its ninth planet! Pluto - long considered an atypical planet - is now officially classified as a 'dwarf planet,' and is the most famous representative of the hundreds of new objects, some of them over a thousand kilometers in diameter, which have been detected beyond Neptune.

The discovery of the Kuiper Belt has transformed our perception of the Solar System, and its study has become one of the most active branches of planetology. What we are finding...