Early Italian scientist and mathematician (7)

I believe the answer is:

galileo

(Other definitions for galileo that I've seen before include "Great Italian astronomer and physicist of 17th century, suppressed by Church" , "Refracting telescope inventor" , "Italian astronomer who had trouble with church" , "US unmanned space-craft launched in 1989 to investigate Jupiter" , "Italian astronomer and mathematician, d. 1642" .)

I've seen this clue in the Sydney Morning Herald.

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