Henry Ussher (astronomer)
Irish mathematician and astronomer / From Wikipedia, the free encyclopedia
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Henry Ussher (1741–1790) was an Irish mathematician and astronomer, best known as the inaugural Andrews Professor of Astronomy at Trinity College Dublin (TCD), a title later accompanied with the designation Royal Astronomer of Ireland. Ussher was a key player in the setting up of Dunsink Observatory outside the city of Dublin, and was its first director.[1]