The past, present and future supernova threat to Earth’s biosphere

  title={The past, present and future supernova threat to Earth’s biosphere},
  author={M. Beech},
  journal={Astrophysics and Space Science},
  • M. Beech
  • Published 2011
  • Physics
  • Astrophysics and Space Science
A brief review of the threat posed to Earth’s biosphere via near-by supernova detonations is presented. The expected radiation dosage, cosmic ray flux and expanding blast wave collision effects are considered, and it is argued that a typical supernova must be closer than ∼10-pc before any appreciable and potentially harmful atmosphere/biosphere effects are likely to occur. In contrast, the critical distance for Gamma-ray bursts is of order 1-kpc. In spite of the high energy effects potentially… Expand
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  • J. Ellis, D. Schramm
  • Physics, Medicine
  • Proceedings of the National Academy of Sciences of the United States of America
  • 1995
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