Floor‐Fractured Craters on Ceres and Implications for Interior Processes
نویسندگان
چکیده
منابع مشابه
The missing large impact craters on Ceres
Asteroids provide fundamental clues to the formation and evolution of planetesimals. Collisional models based on the depletion of the primordial main belt of asteroids predict 10-15 craters >400 km should have formed on Ceres, the largest object between Mars and Jupiter, over the last 4.55 Gyr. Likewise, an extrapolation from the asteroid Vesta would require at least 6-7 such basins. However, C...
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Thermochemical models have predicted that Ceres, is to some extent, differentiated and should have an icy crust with few or no impact craters. We present observations by the Dawn spacecraft that reveal a heavily cratered surface, a heterogeneous crater distribution, and an apparent absence of large craters. The morphology of some impact craters is consistent with ice in the subsurface, which mi...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Planets
سال: 2018
ISSN: 2169-9097,2169-9100
DOI: 10.1029/2018je005632