Scientists prove dwarf planet Ceres contains water

Scientists have long thought that the dwarf planet Ceres might hold some form of water, but they've only had indirect evidence at best -- until today, that is. An ESA-led team has used signal fluctiations to confirm that the asteroid belt planetoid is spewing water vapor from two points on its surface, creating both ice and a rudimentary atmosphere. It isn't clear what's producing the vapor, although researchers believe that geysers, thawing or icy volcanoes may be responsible.

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