Muons, mutations, and planetary shielding

Research output: Contribution to journalArticlepeer-review


Life on earth is protected from astrophysical cosmic rays by the heliospheric magnetic and slowly varying geomagnetic fields, and by collisions with oxygen and nitrogen molecules in the atmosphere. The collisions generate showers of particles of lesser energy; only muons, a charged particle with a mass between that of an electron and a proton, can reach earth’s surface in substantial quantities. Muons are easily detected, used to image interior spaces of pyramids, and known to limit the stability of qubits in quantum computing; yet, despite their charge, average energy of 4 GeV and ionizing properties, muons are not considered to affect chemical reactions or biology. In this Perspective the potential damaging effects of muons on DNA, and hence the repercussions for evolution and disease, are examined. It is argued here that the effect of muons on life through DNA mutations should be considered when investigating the protection provided by the magnetic environment and atmosphere from cosmic rays on earth and exoplanets.

Original languageEnglish (US)
Article number1067491
JournalFrontiers in Astronomy and Space Sciences
StatePublished - Nov 23 2022

Bibliographical note

Funding Information:
This work was supported by grant DK106130 from the NIDDK and the University of Minnesota.

Publisher Copyright:
Copyright © 2022 de Groen.


  • DNA
  • aging
  • diseases
  • evolution
  • exoplanets
  • magnetospheres
  • muons
  • mutations

PubMed: MeSH publication types

  • Journal Article


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