At the ISSI Workshop 'The Origin and Composition of Cometary Material' a sh
ort questionnaire was devised by the 'Critical Measurements for the Future'
Working Group and distributed to the attendees, The aim was to iind out wh
at they thought were the 'critical questions' and the key measurements need
ed to rind answers. Results from the 15 respondents are collated and summar
ized.