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Ancient Subsurface Ocean Could Have Flowed on Pluto's Moon Charon

Pluto’s moon Charon may have once had subterranean oceans of liquid water, something the U.S. space agency NASA hopes to investigate further when its New Horizons spacecraft swings by just over a year from now. The notion that there could have been liquid water on a body 29 times further away from the sun than Earth seems far fetched given the surface temperature on Charon is minus 229 Celsius, but NASA scientists say that because the moon may have had an “eccentric,” or slightly...

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