John Herbert Chapman
"In 1948 John H. Chapman (McGill, PhD, 1951; 1921-1979) graduated with a B.Sc. from Western (a member of the first class to graduate in the Radio Physics option), and went on to an illustrious career in Ottawa, and has often been referred to as "the father of the Canadian space program." In particular, from 1958-71, Dr. Chapman played a key role in initiating and directing the hugely successful Alouette/ISIS scientific earth satellite program, and was assistant deputy minister for the Canadian space program in the 1970s."
[the above is from Don Moorcroft's history of the Department of Physics and Astronomy to 2003]
On April 13, 2015, Western University held its inaugural Space Day, hosting graduate student research talks. There was a keynote talk by Michael Vergalla, Project Engineer of Moon Express. The celebration culminated with the unveiling of a plaque for John H. Chapman. The plaque is now on display in the atrium of the Physics and Astronomy building.