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Dust particle impacts during the Giotto encounter with comet Grigg-Skjellerup

Colangeli, L.; Green, S. F.; Greenberg, J. M. +7 more

IN the European Space Agency's 1992 Giotto Extended Mission, the Dust Impact Detection System operated successfully during a fly-by that took the spacecraft within about 200 km of the nucleus of comet Grigg-Skjellerup. During the encounter, three meteoroid impacts were detected on Giotto's front shield. The particle masses were found to be lOO