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An 800 Myr-old Impact Shower on the Terrestrial Planets from the Breakup of the Eulalia Parent Body

  • Authors: William F. Bottke, David Vokrouhlický, Melissa Dykhuis, Nicolle Zellner

William F. Bottke et al 2026 The Planetary Science Journal 7 .

  • Provider: AAS Journals

Caption: Figure 16.

The number and sizes of Eulalia family members impacting the terrestrial planets and the Moon. The impact flux for Venus (green) is the highest, followed by the Earth (blue), Mars (red), and the Moon (gray). The impact flux was calculated using the data from Table 1, the collisional evolution results shown in Figure 14, and the collision probabilities outlined in Figure 15. We assume that the lunar impact flux is 20 times lower than that of Earth. The solid lines use the values from Table 1, while the dashed lines are extrapolated from the shape of the observed Eulalia SFD on the large end (black curve in Figure 14) and from the shape of the estimated initial Eulalia SFD on the small end (blue curve in Figure 14).

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