Pluto is so far away that New Horizons, the space craft to finally get to it, had to speed faster than any space craft before it, and it still took years to get to Pluto. Before this mission images were fuzzy, with even the Hubble Space Telescope unable to produce enough pixels to show any detail whatsoever. All we knew is that it had bright and dark areas, and a moon, Charon, that was large compared to Pluto itself. There are also two smaller moons known to exist. This picture is now changing, coming into a much better focus.
The early reports indicate large ice structures, not likely water ice, with cracks and cliffs. Another surprise is that Pluto is being reported as slightly larger than it was initially thought to be.
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