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Friday, November 30, 2012

Water Ice on Mercury

Mercury likely harbors between 100 billion and 1 trillion metric tons of water ice in permanently shadowed areas near its poles, scientists analyzing data from NASA's Messenger spacecraft announced Thursday.

Life on sun-scorched Mercury remains an extreme longshot, the researchers stressed, but the new results should still put a spring in the step of astrobiologists around the world.

"The more we examine the solar system, the more we realize it's a soggy place," Jim Green, the director of NASA's Planetary Science Division, said during a press conference Friday. "And that's really quite exciting, because that means the amount of water that we have here on Earth — that was not only inherent when it was originally formed but probably brought here — that water and other volatiles were brought to many other places in the solar system," Green added. "So it really bodes well for us to continue on the exploration, following the water and its signs throughout the solar system."

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