Which historical figure is credited with a true declaration in the 16th century that the Sun and other stars share the same fundamental nature?

Answer

Giordano Bruno

Giordano Bruno concluded in the 16th century that if the Sun was extremely distant, it would naturally appear as a star, thus sharing the same fundamental composition as other stars.

Which historical figure is credited with a true declaration in the 16th century that the Sun and other stars share the same fundamental nature?
sunastronomystarcelestial body