Mercury's polar ice formation

Numéro d’image : 11692947
Mercury's polar ice formation
Mercury's polar ice formation. Computer illustration illustrating the formation of Mercury's polar ice deposits. (A) High-latitude impact crater lit by angled Sun rays creates a region of very warm temperatures on the rim,with lower temperatures on the floor,and extremely cold temperatures in regions of permanent shadow. (B) A comet or water-rich asteroid containing organic compounds impacts Mercury. (C) The water and organic compounds are spread over a wide region with a small fraction migrating to the poles where they become cold-trapped as ices. (D) Over time,water ice in the warmer regions vaporises,leaving more stable organic impurities at the surface. (E) The ice retreats further to a stable long-term configuration. In the coldest areas,water
Licence : Droits gérés
Crédit: Science Photo Library / Carnegie Institution of Washington / Johns Hopkins University Applied Physics Laboratory / NASA
Taille de l’image : 1967 px × 5428 px
Model Release : Non requis
Property Release : Non requis
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