New Horizons Gets Closer to Pluto, But Mystery Spots Now Out of Sight
The L.A. Times reports that the strange spots spotted on the surface of Pluto by the New Horizons mission will be on the wrong side of the planet for the approaching fly-by that the craft will make of the smallest planet (or dwarf planet, depending) of our solar system. (The BBC makes a similar observation.) That doesn't mean that New Horizons' approach is anything short of "a spectacular event."
Pluto as a planet doesn't really make much sense, without including others.
Eris, for example. While currently three times the distance of pluto from the sun, at times (next ~2800AD) it is actually closer than pluto to the sun, as well as more massive.
There is no real inarguable set.