Giordano Bruno, Italian mathematician, astronomer, and philosopher (born 1548)

Giordano Bruno was an Italian philosopher, poet, alchemist, astrologer, cosmological theorist, and esotericist. He is known for his cosmological theories, which conceptually extended to include the then-novel Copernican model. He practiced Hermeticism and gave a mystical stance to exploring the universe. He proposed that the stars were distant suns surrounded by their own planets (exoplanets), and he raised the possibility that these planets might foster life of their own, a cosmological position known as cosmic pluralism. He also insisted that the universe is infinite and could have no center.