Giotto pioneers

Dr Ruediger Reinhard, Giotto Project Scientist, Prof. F. Whipple (inventor of the 'Whipple shield') from Harvard's Smithsonian Astrophysical Observatory, and Dr Uwe Keller, Principal Investigator for the Halley Multicolour Camera, at the 20th ESLAB Symposium in Heidelberg in October 1986, where the main subjects of discussion were the spacecraft encounters from the various international missions to Comet Halley this year.