Jupiter – friend or foe? III: the Oort cloud comets

@article{Horner2009JupiterF,
  title={Jupiter – friend or foe? III: the Oort cloud comets},
  author={Jonathan Horner and Barrie W. Jones and John E. Chambers},
  journal={International Journal of Astrobiology},
  year={2009},
  volume={9},
  pages={1 - 10}
}
Abstract It has long been assumed that the planet Jupiter acts as a giant shield, significantly lowering the impact rate of minor bodies on Earth. However, until recently, very little work had been carried out examining the role played by Jupiter in determining the frequency of such collisions. In this work, the third of a series of papers, we examine the degree to which the impact rate on Earth resulting from the Oort cloud comets is enhanced or lessened by the presence of a giant planet in a… 
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