The Rosetta mission, which confirmed the existence of 18 wells in the northern hemisphere of comet 67P / Churyumov-Gerasimenko, with a depth of between 100 and 200 meters, first observed activity in them.
In a study published yesterday in the journal Nature, the researchers describe the activity and pose a scenario on the origin of these 18 wells, a circular cavities deep similar to terrestrial natural wells, which are known to be common in many comets.
The research, first observed activity jets of gas and dust rising from the walls of the pits, sheds light on their origin and highlights the heterogeneous nature of the first hundred meters under the current surface of the comet 67P.
Between July and December 2014, the Rosetta comet mission observed from a distance of just eight km, allowing determine that the jets of gas and dust are produced when . the ice core sublimate (transition from ice to gas)
As for its origin, there are two possible scenarios exist in the nucleus from the comet formed and would be an evolutionary process.
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