Great article. I think this is the most concise article about Pluto's status as a dwarf planet. I can see the slippery slope calling Pluto a planet when there are so many objects in the solar system similar in mass to Pluto. Who knows, in the next 20-30 years we may even find an object well beyond Pluto's orbit that has more mass than Pluto. There are several astronomers that suggest there is gravitational influence from a possible planet far in the Kuiper belt. This would be an exciting discovery if this was the case.