Variations in the amount of water ice on Ceres' surface suggest a seasonal water cycle.
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ABSTRACT:
SUBMITTER: Raponi A
PROVIDER: S-EPMC5851659 | biostudies-literature | 2018 Mar
REPOSITORIES: biostudies-literature
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Variations in the amount of water ice on Ceres' surface suggest a seasonal water cycle.
Raponi Andrea A De Sanctis Maria Cristina MC Frigeri Alessandro A Ammannito Eleonora E Ciarniello Mauro M Formisano Michelangelo M Combe Jean-Philippe JP Magni Gianfranco G Tosi Federico F Carrozzo Filippo Giacomo FG Fonte Sergio S Giardino Marco M Joy Steven P SP Polanskey Carol A CA Rayman Marc D MD Capaccioni Fabrizio F Capria Maria Teresa MT Longobardo Andrea A Palomba Ernesto E Zambon Francesca F Raymond Carol A CA Russell Christopher T CT
Science advances 20180314 3
The dwarf planet Ceres is known to host a considerable amount of water in its interior, and areas of water ice were detected by the Dawn spacecraft on its surface. Moreover, sporadic water and hydroxyl emissions have been observed from space telescopes. We report the detection of water ice in a mid-latitude crater and its unexpected variation with time. The Dawn spectrometer data show a change of water ice signatures over a period of 6 months, which is well modeled as ~2-km<sup>2</sup> increase ...[more]
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