Alastair G. W. Cameron award received Leonard Medal
Awards and recognition
1961 Fellow of the Royal Society of Canada
1970 R.M. Petrie Prize Lecture Award of the Canadian Astronomical Society
1972 Fellow of the American Physical Society
1976  Member of the National Academy of Sciences
1983 NASA Distinguished Public Service Medal
1988 J. Lawrence Smith Medal of the National Academy of Sciences
1989 Harry H. Hess Medal of the American Geophysical Union
1994 Leonard Medal of the Meteoritical Society
1997 Henry Norris Russell Lectureship of the American Astronomical Society
2006 Hans Bethe Prize
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