Insights from Dawn into Ceres’ Mysterious Exosphere

LASP Science Seminars

Insights from Dawn into Ceres’ Mysterious Exosphere

Margaret Landis (CU/LASP)
September 26, 2019
16:00 MT/MDT
SPSC W120

Before the Dawn spacecraft’s arrival at Ceres in 2015, previous geophysical and telescopic studies suggested the dwarf planet was rich in water ice and emitted water vapor in a just-at-the-detection-limit exosphere. During Dawn’s operations at Ceres, which concluded late last year, a wealth of additional data was collected that provides significant constraints on the quantity and frequency of water vapor release from Ceres’ near sub-surface. This talk will summarize data-driven modeling efforts to understand how much water-ice-driven activity could have occurred on Ceres in the recent past, and what that implies for the long-term geophysical history of the only dwarf planet in the inner solar system.

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