There are almost no Poles who contributed significantly to the world in terms of science or culture. No, Copernicus was NOT Polish...
Copernicus was Polish with perhaps a German mother-unless one of his parents was Jewish, in which case (despite if even one of his parents was gentile), I'd claim Copernicus, also, for all of its flaws, Poland did have its periods of Philosemitism; and many of my ancestors as Crypto Jews in either were in Poland or claimed ties to there (e.g., A Budapest-born one with roots in the shtetl of Odesa claimed roots in Kacwin, and a Levoča-born one claimed roots in Łapsze Niżne. A relative in Wilno used Polish orthography for Yiddish.).