Exchange of meteorites (and life?) between stellar systems.

@article{Melosh2003ExchangeOM,
  title={Exchange of meteorites (and life?) between stellar systems.},
  author={H. Jay Melosh},
  journal={Astrobiology},
  year={2003},
  volume={3 1},
  pages={
          207-15
        }
}
  • H. Melosh
  • Published 2003
  • Physics, Geology
  • Astrobiology
It is now generally accepted that meteorite-size fragments of rock can be ejected from planetary bodies. Numerical studies of the orbital evolution of such planetary ejecta are consistent with the observed cosmic ray exposure times and infall rates of these meteorites. All of these numerical studies agree that a substantial fraction (up to one-third) of the ejecta from any planet in our Solar System is eventually thrown out of the Solar System during encounters with the giant planets Jupiter… 

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