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yr oedd yn barod i rannu ei wybodaeth arbenigol am fyd gwyddonol astroffiseg a châi bleser arbennig o roi rhywun ar ben ffordd ynghylch y rhan allweddol yr oedd gwyddonwyr o gymru wedi'i chwarae , ar hyd yr oesoedd , yn natblygiad y byd
he would willingly share his expert knowledge of the scientific world of astrophysics and he would gain particular pleasure from giving a briefing on the key role that welsh scientists , through the ages , played in world development
