Planetary system BC by Aristarchus of Samos, but received no support from most other ancient astronomers. "De revolutionibus orbium coelestium" by Nicolaus Copernicus, published in 1543, was the first mathematically predictive heliocentric model of a planetary system. 17th-century successors Galileo Galilei, Johannes Kepler, and Isaac Newton developed an understanding of physics which led to the gradual acceptance of the idea that the Earth moves round the Sun and that the planets are governed by the same physical laws that governed the Earth. In the 16th century the Italian philosopher Giordano Bruno, an early supporter of the Copernican theory that the Earth and
Canticle of the Sun Kõrvits (1969) composed a 12-part "A cappella" piece for mixed choir (SSAATTBB) "The Canticle of the Sun" for Southern Chorale choir in 2014. Pope Francis published his second encyclical Laudato si' on June 18, 2015. The Canticle inspired the encyclical's title, "Praise be to you," and was quoted in the first paragraph, "Praise be to you, Our Lord, through our Sister, Mother Earth, who sustains and governs us, and who produces various fruits, with colored flowers and herbs." The Irish composer Vincent Kennedy was commissioned by the Irish Franciscans to set the Canticle of the Sun for Soprano, Harp and