Discovery of organic grains in comet Halley

  title={Discovery of organic grains in comet Halley},
  author={Dayal T. Wickramasinghe and David A. Allen},
Comets are believed to have formed at the same time as the other bodies in the Solar System, but at a sufficient distance from the proto-Sun that their composition was unaffected by fractionation. Thus, they may preserve intact the chemical composition of the original solar nebula, and perhaps of much of the Galaxy. Previously we demonstrated1,2 that one component of the interstellar dust grains has an organic composition, by detecting a broad absorption band at a central wavelength of 3.4 μm… CONTINUE READING
This paper has been referenced on Twitter 1 time. VIEW TWEETS


Publications citing this paper.