Unexpected Finding
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NASA's
9-year Pluto mission has produced an
unexpected finding:
Amazingly, there are no craters at all in this image. None. That means the surface must be young, having been resurfaced quite recently. The scientists on New Horizons figure the terrain must be less than 100 million years old, but that’s a guess.
there is no tidal stress [from Pluto's moon Charon]. What could be heating Pluto so that its surface is young? Radioactivity from rocks beneath the surface? It’s hard to say just yet. We have a Plutonian mystery on our hands.
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