Determining the ages of comets from the fraction of crystalline dust

@article{Nuth2000DeterminingTA,
  title={Determining the ages of comets from the fraction of crystalline dust},
  author={Joseph A. Iii Nuth and Hugh G. M. Hill and Gunther Kletetschka},
  journal={Nature},
  year={2000},
  volume={406},
  pages={275-276}
}
The timescale for the accretion of bodies in the disk surrounding a young star depends upon a number of assumptions, but there are few observational constraints. In our own Solar System, measurements of meteoritic components can provide information about the inner regions of the nebula, but not the outer parts. Observations of the evolution of more massive protostellar systems (Herbig Ae/Be stars) imply that significant changes occur in the physical properties of their dust with time. The… 

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