Discovery and exploration of the Solar System that moved through the sky. Although the Greek philosopher Aristarchus of Samos had speculated on a heliocentric reordering of the cosmos, Nicolaus Copernicus in the 16th century developed a mathematically predictive heliocentric system. His 17th-century successors, Galileo Galilei, Johannes Kepler, and Isaac Newton, developed a modern understanding of physics that led to the gradual acceptance of the idea that Earth moves around the Sun and that the planets are governed by the same physical laws that govern Earth. In more recent times, this led to the investigation of geological phenomena such as mountains and craters and seasonal meteorological phenomena such
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