Pluto may have raised more questions than it answered

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MEXICO: The first-ever flyby of Pluto may have raised more questions than it answered.
NASA’s New Horizons spacecraft discovered a staggering diversity of terrain during its close approach on July 14, from towering water-ice mountains to a vast, crater-free plain largely divided into mysterious “cells” dozens of kilometers wide.
And that’s just on Pluto itself. New Horizons’ observations also revealed that Charon, the dwarf planet’s largest moon, sports a canyon system at least 650 miles (1,050 km) long and a dark polar cap that researchers informally named after Mordor, the realm of the evil wizard Sauron in J.R.R. Tolkien’s “Lord of the Rings” trilogy. [See more Pluto photos from New Horizons]
Making sense of all the new information — that is, getting a relatively complete understanding of the evolution of Pluto and its five moons — is going to take some time, said New Horizons principal investigator Alan Stern, of the Southwest Research Institute in Boulder, Colorado.