Astronomer whose name is repeated five times successively in "Bohemian Rhapsody" (7)
I believe the answer is:
galileo
(Other definitions for galileo that I've seen before include "Great Italian astronomer and physicist of 16th/17th century" , "was in trouble with the Inquisition" , "Famous scientist" , "Great Italian astronomer, a founder of modern science" , "victim of Inquisition" .)