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  Ceres: ice and ammoniaDec 10, 2015 10:12 PM PST | url
 
Added 1 new A* page:A new BBC article reveals that scientists think they have an explanation for Ceres' mystery bright spots spotted by the Dawn probe in the bottoms of craters on the dwarf planet: "they are places where impacts have excavated a briny layer of water-ice under the dwarf planet's surface."
 
Also, clay materials with an ammonia component are thought to have been spotted across the Ceres' surface; because ammonia boils away to a gas "above about 100 kelvin (-173C)"—a temperature that is met in Ceres' current orbit—these "ammoniated phyllosilicates" would not normally have been able to form so close to the Sun, suggesting that Ceres may have come from a much colder area, farther out in the Solar System.
 
 
 
 
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