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New Horizons Goes in for Pluto Close-up
First up, the closest view yet of Pluto’s biggest moon, Charon. The scientific team was surprised by the relatively smooth surface of the moon—they were expecting many more craters to dot its surface. Charon’s sleek exterior suggests that it has been recently geologically active. The dark region up top (which the crew has informally dubbed “Mordor”) shows several bright spots, suggesting that it is perhaps a region coated with a thin layer of some dark material. And on the upper right-hand side of Charon, that long notch is actually a canyon 4 to 6 miles deep.
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