Indigo Girls hit inspired by an astronomer (7)

I believe the answer is:

galileo

(Other definitions for galileo that I've seen before include "Famous Italian" , "Pioneer scientist" , "US unmanned space-craft launched in 1989 to investigate Jupiter" , "Great Italian astronomer, a founder of modern science" , "Sixteenth and seventeenth century Italian astronomer tried for heresy" .)

I've seen this clue in the Universal.

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