He studied at Sidney Sussex College, Cambridge, and was later appointed as Assistant Director of the university's Solar Physics Observatory, a position that he held from 1950 to 1960. During his career, he visited several countries to carry out astronomical investigations, including Fiji, Bolivia (twice) and Canada. He was President of the Royal Astronomical Society from 1973 to 1975. He held his Oxford professorship in conjunction with a fellowship of New College, Oxford.
- "Blackwell, Prof. Donald Eustace". Who Was Who. Oxford University Press. November 2011. Retrieved 31 May 2012. (subscription required (. ))