Water is the Holy Grail of space exploration: wherever we find, it, there is at least some possibility of life. As we chase underground deposits on Mars, though, another body is appearntly spouting huge geysers of the precious compund into space. Saturn's strange Enceladus is jetting masses of dust and gas - and, some researchers now argue, liquid water.
COMMENT: Out seemingly familiar solar system is turning out to be like the universe at large - not just stranger than we imagine, but stranger than we can imagine.
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