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Excavation Depth. Modeling Vesta’s Two Big Basins. M. Jutzi, E. Asphaug, P. Gillet, J.-A. Barrat and W. Benz. A one-two punch….

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  1. Excavation Depth Modeling Vesta’s Two Big Basins M. Jutzi, E. Asphaug, P. Gillet, J.-A. Barrat and W. Benz A one-two punch… Asteroid Vesta, target of NASA’s Dawn mission, is a heavily battered 500 km diameter terrestrial proto-planet. To better understand this asteroid and its evolution (and by extension the Earth, Moon, Mars and other planets) we simulate the formation of its two major basins, one after the other, starting with a sphere. Top right is the final shape of our model, looking a lot like the real asteroid, colored to show the depth of the excavated material (red is deepest). Bottom right is a comparison of our model with the Dawn mission topography for Vesta. This research connects the collisions to the Dawn mission data, and to the meteorites on Earth that derive from Vesta. MODEL Dawn Mission Vesta Topography

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