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[Scientists using European Space Agency’s Herschel Space Observatory have detected water vapor escaping from two regions on the dwarf planet / asteroid Ceres.][yahoo] The question then becomes whether it is erupting from cold volcanoes or if it is subliming, with a possible answer coming in 2015 when the NASA [Dawn][] spacecraft orbits the planet/asteroid. Water on Ceres supports “models of the solar system in which giant planets, such as Jupiter, migrated to their current positions, mixing material from the outer and inner regions of the solar system. This mixing could have moved Ceres and Vesta far from the sites where they formed. Ceres probably formed close to its current position, but accreted material from further out. … The findings also suggest that asteroids may have delivered some of the water in Earth’s oceans.”

And, strangely enough, Ceres features in James Corey’s [Leviathan Wakes][], which I just finished reading. Cue _Twilight Zone_ music…

[yahoo]: http://news.yahoo.com/water-found-dwarf-planet-ceres-may-erupt-ice-182225337.html
[Dawn]: http://www.space.com/12279-nasa-dawn-asteroid-mission-works-infographic.html
[Leviathan Wakes]: http://www.amazon.com/gp/product/0316129089/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=0316129089&linkCode=as2&tag=johnlaudun-20

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