On the nature of interstellar grains

  title={On the nature of interstellar grains},
  author={Fred Hoyle and C. Wickramasinghe},
  journal={Astrophysics and Space Science},
  • Fred Hoyle, C. Wickramasinghe
  • Published 1979
  • Physics, Chemistry
  • Astrophysics and Space Science
  • Data on interstellar extinction are interpreted to imply an identification of interstellar grains with naturally freeze-dried bacteria and algae. The total mass of such bacterial and algal cells in the galaxy is enormous, ∼1040 g. The identification is based on Mie scattering calculations for an experimentally determined size distribution of bacteria. Agreement between our model calculations and astronomical data is remarkably precise over the wavelength intervals µ−1 < ;−2 < 1.94µ−1 and 2.5µ−1… CONTINUE READING
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