Answer :
Nicolaus Copernicus was a Polish Renaissance mathematician and astronomer who was instrumental in establishing the concept of a heliocentric solar system, in which the sun, rather than the earth, is the center of the solar system. Therefore, the words to fill in the blanks is Nicolaus Copernicus and Heliocentric theory.
Answer:
One of the first major scientific discoveries of the Renaissance was made by a Polish mathematician and astronomer, Copernicus who introduced the Heliocentric theory.
Explanation: