1952 - 1956 | Bachelor of Arts (BA) in Mathemarics and Physics completed at the University of Toronto, Canada |
1956 | Gold Medal received from the Royal Astronomical Society of Canada |
1956 - 1957 | Pearce Fellow at Princeton University, USA |
1959 | Doctor of Philosophy (PhD) in Astronomy completed at Princeton University |
1959 - 1961 | Astronomer at the US National Research Laboratory |
1961 - 1963 | Research Associate in the Department of Astrophysical Sciences at Princeton University |
1963 - 1965 | Researcher in the Department of Astrophysical Sciences at Princeton University |
1966 - 1968 | Research Astronomer, Lecturer and Associate Professor in the Department of Astrophysical Sciences at Princeton University |
1968 - 1976 | Senior Research Astronomer, Lecturer and Professor at Princeton University |
1969 - 1976 | Director of Graduate Studies at Princeton University |
1970 - 1973 | Council Member of the American Astronomical Society |
1973 - 1976 | Member of Astronomy Panel of the US National Science Foundation |
1975 - 1976 | Chairman of the Astronomy Panel of the US National Science Foundation |
1976 - 1977 | Member of the Expert Subcommittee for Australian Review of Observatories |
1976 - 1986 | Director of the Anglo-Australian Observatory in Epping and Coonabarabran, New South Wales |
1977 - 1982 | Member of the Australian Synthesis Telescope Steering Committee |
1977 - 1985 | Councilor of the Astronomical Society of Australia |
1979 - 1981 | Vice-President of the Astronomical Society of Australia |
1980 | Associate of the Royal Astronomical Society |
1981 - 1983 | President of the Astronomical Society of Australia |
1982 - 1986 | Member of the Australian Telescope Advisory Committee |
1984 - | Fellow of the Australian Academy of Science (FAA) |
1986 - 2000 | Director General of the Herzberg Institute of Astrophysics at the National Research Council of Canada in Ottawa, Ontario, Victoria and Penticton, British Columbia |
1987 - 1993 | Member of the James Clerk Maxwell Telescope Board in Canada |
1987 - 1998 | Member of the Advisory Committee on Cosmology and Gravity of the Canadian Institute for Advanced Research |
1989 - 1991 | Vice-Chairman of the James Clerk Maxwell Telescope Board |
1991 - 1993 | Chairman of the James Clerk Maxwell Telescope Board |
1995 - 2000 | Member of the James Clerk Maxwell Telescope Board |
2001 - | Researcher Emeritus at the National Research Council of Canada |