Muhammad Ali that year, before converting to Islam after 1961. At age 22, in 1964, he won the world heavyweight championship from Sonny Liston in a major upset. He then changed his name from Cassius Clay, which he called his "slave name", to Muhammad Ali. He set an example of racial pride for African Americans and resistance to white domination during the Civil Rights Movement. In 1966, two years after winning the heavyweight title, Ali further antagonized the white establishment by refusing to be drafted into the U.S. military, citing his religious beliefs, and opposition to American involvement in the Vietnam War.
Ali Qushji Ṭūsī’s "Tadhkira" (II.1[6]) in which Copernicus follows Ṭūsī’s objection to Ptolemy’s "proofs" of the Earth's immobility." Ali Qushji Ala al-Dīn Ali ibn Muhammed (1403 – 16 December 1474), known as Ali Qushji (Ottoman Turkish/Persian language: علی قوشچی, "kuşçu" – falconer in Turkish; Latin: "Ali Kushgii") was an astronomer, mathematician and physicist originally from Samarkand, who settled in the Ottoman Empire some time before 1472. As a disciple of Ulugh Beg, he is best known for the development of astronomical physics independent from natural philosophy, and for providing empirical evidence for the Earth's rotation in his treatise, "Concerning the Supposed Dependence