Like a bottle of water left to freeze, Charon’s liquid center froze, expanded and CRACKED THE MOON!
In recent years humanity has learned that oceans are not unique to Earth. Discoveries of them on Saturn’s moons Enceladus and Titan and Jupiter’s moon Europa indicate that oceans may actually be ubiquitous in our solar system.
Now, it seems, it is possible that an ocean once existed on a satellite of the dwarf planet Pluto.
NASA said Friday that images obtained by the New Horizons probe suggest that Charon once had a subsurface sea that expanded outward as it froze, cracking the surface of the moon.
The photographs show tectonic faults, including some valleys more than 6.5 kilometers deep, that indicate an expansion of Charon sometime in the past.
Here’s how it likely happened:
The outer-most layer of Charon, including its surface, is now water ice. But the satellite’s internal heat would have caused that ice to melt deep under the surface, which would have resulted in a subsurface…
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