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Keywords

astronomy, variable stars, extragalactic distance scale, philosophy of science, cognitive astrophysics

Biography

BSc University of Southern California (1969)
PhD University of Toronto (1974)
Research Fellow, Cambridge University (1975-78)
Full Professor, University of Toronto (1985)
Co-Founder, NASA/IPAC Extragalactic Database (NED) (1987)
Observational Research Astronomer, Carnegie Observatories (1990-date)
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