Modeling the Historical Flux of Planetary Impactors

  title={Modeling the Historical Flux of Planetary Impactors},
  author={David Nesvorn{\'y} and Fernando V. Roig and William F. Bottke},
  journal={The Astronomical Journal},
The impact cratering record of the Moon and the terrestrial planets provides important clues about the formation and evolution of the solar system. Especially intriguing is the epoch ≃3.8–3.9 Gyr ago (Ga), known as the Late Heavy Bombardment (LHB), when the youngest lunar basins such as Imbrium and Orientale formed. The LHB was suggested to originate from a slowly declining impactor flux or from a late dynamical instability. Here, we develop a model for the historical flux of large asteroid… 

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