Where does “太陽中心説” come from?

太陽中心説 (Japanese) comes from Japanese 中心, from Japanese 心, from Old Japanese 心, from Proto-Japonic *kəkərə — heart.

Ancestry of “太陽中心説”, step by step

太陽中心説 traces back through 3 separate lines of ancestry.

via Japanese 中心

StepLanguageWordMeaning
1Japanese中心center, middle, heart, core; center, hub; crux,...
2Japanese心mind, heart, spirit, soul; thoughts, ideas;...
3Old Japanese心heart, mind, spirit; emotion, feeling; heart,...
4Proto-Japonic*kəkərəheart

via Japanese 太陽

StepLanguageWordMeaning
1Japanese太陽the sun; greater yang; the Sun
2Middle Chinese太陽—

via Japanese 説

StepLanguageWordMeaning
1Japanese説theory
2Middle Chinese說—
Every word from Proto-Japonic *kəkərə →
太陽中心説 — Etymology, Origin & Word History | Etymology Explorer