Co·per·ni·can sys·tem
noun/kəˈpɜːnɪkən sɪstəm/
/kəˈpɜːrnɪkən sɪstəm/
[singular]- the theory that the sun is the centre of the solar system, with the earth and other planets moving around it
哥白尼体系（即日心说） Word Originmid 17th cent.: named after Copernicus (1473-1543), the Polish astronomer.