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    This article has been cited by the following publications. This list is generated based on data provided by CrossRef.

    Vukotić, Branislav and Ćirković, Milan M. 2012. Astrobiological Complexity with Probabilistic Cellular Automata. Origins of Life and Evolution of Biospheres, Vol. 42, Issue. 4, p. 347.


    Crawford, Ian A. Fagents, Sarah A. Joy, Katherine H. and Rumpf, M. Elise 2010. Lunar Palaeoregolith Deposits as Recorders of the Galactic Environment of the Solar System and Implications for Astrobiology. Earth, Moon, and Planets, Vol. 107, Issue. 1, p. 75.


    Wickramasinghe, J. T. and Napier, W. M. 2008. Impact cratering and the Oort Cloud. Monthly Notices of the Royal Astronomical Society, Vol. 387, Issue. 1, p. 153.


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  • International Journal of Astrobiology, Volume 6, Issue 3
  • July 2007, pp. 223-228

Pollination of exoplanets by nebulae

  • W.M. Napier (a1)
  • DOI: http://dx.doi.org/10.1017/S1473550407003710
  • Published online: 01 April 2007
Abstract
Abstract

The Solar System passes within 5 pc of star-forming nebulae every ∼50–100 million years, a distance which can be bridged by protected micro-organisms ejected from the Earth by impacts. Such encounters disturb the Oort cloud, and induce episodes of bombardment of the Earth and the ejection of microbiota from its surface. Star-forming regions within the nebulae encountered may thus be seeded by significant numbers of microorganisms. Propagation of life throughout the Galactic habitable zone ‘goes critical’ provided that, in a typical molecular cloud, there are at least 1.1 habitable planets with impact environments similar to that of the Earth. Dissemination of microbiota proceeds most rapidly through the molecular ring of the Galaxy.

Copyright
Corresponding author
*Correspondence to Professor W.M. Napier, Kilbeg South, Bandon, County Cork, Ireland.
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International Journal of Astrobiology
  • ISSN: 1473-5504
  • EISSN: 1475-3006
  • URL: /core/journals/international-journal-of-astrobiology
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