John (Jay) S. Gallagher III is an American astronomer and an expert on star formation in external galaxies, dwarf galaxies and dark matter. He is the William Morgan Professor of Astronomy at the University of Wisconsin-Madison where he has been a professor since 1991.

Quick facts: John S. Gallagher III, Born, Citizenship, Alm... ā–¼
John S. Gallagher III
Born1947 (age 74ā€“75)[not verified in body]
Alma materPrinceton, University of Wisconsin-Madison
Scientific career
Doctoral advisorArthur Code
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