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Ireland's contribution to deep space missions

McKenna-Lawlor, Susan M. P.

Irish contributions to the Giotto mission, the Phobos mission, and the planned International Solar Terrestrial Physics (ISTP) program are discussed. Results are presented from the Energetic Particle Onset Admonitor (Epona) experiment, which flew on the Giotto mission. The Epona instruments detected electrons, protons, alpha particles, and pickup i…

Exploration of the Dust Environment of the Inner Coma of Comet Halley

McDonnell, J. A. M.

Observations of the dust environment of Comet Halley obtained with Giotto, Vega, Susuei, and Sakigake spacecraft are presented and analyzed. Optical/IR, interplanetary space environment, flux and composition, and dynamics and trajectories experiments were conducted. The relation between the dust environment of comets and meteoroid streams is discu…