Manuel Peimbert Manuel Peimbert Manuel Peimbert Sierra (born June 9, 1941) is a Mexican astronomer and a faculty member at the National Autonomous University of Mexico (UNAM). After earning an undergraduate physics degree from UNAM, Peimbert completed a doctorate at the University of California, Berkeley before returning to UNAM as a faculty member. He works at the UNAM Institute of Astronomy. Peimbert was elected a foreign associate of the National Academy of Sciences in 1987. He was inducted into the Colegio Nacional in Mexico in 1993. He received the Hans Bethe Prize from the American Physical Society in 2012. Peimbert and his
Unam sanctam Unam sanctam On 18 November 1302, Pope Boniface VIII issued the papal bull which historian Brian Tierney calls "...probably the most famous of all the documents on church and state that has down to us from the Middle Ages." The original document is lost, but a version of the text can be found in the registers of Boniface VIII in the Vatican Archives. The Bull lays down dogmatic propositions on the unity of the Catholic Church, the necessity of belonging to it for eternal salvation, the position of the Pope as supreme head of the Church, and the duty thence