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Chemical Heterogeneity and Mineralogy of Halley's Dust

Kissel, J.; Schulze, H.

It is commonly assumed that comets are pristine bodies which still contain relatively unaltered material from the beginning of our solar system. Therefore, in March 1986 the chemical composition of Halley's dust particles was investigated by time- of-flight mass spectrometers on board the Vega 1 & 2 and Giotto spacecraft using the high relativ…