See the Bulletin of the Atomic Scientists, 8 (1952), p. 143-6, 165 for a translation of part of the Papal text. For an excellent discussion of it see Ernan McMullin, "How should <!g>cosmology relate to theology?" in The Sciences and Theology in the Twentieth Century, A. R. <!g>Peacocke, ed. (Notre Dame: University of Notre Dame, 1981), p. 17-57. According to McMullin, the Pope later refrained from this claim after being cautioned by Georges Lemaitre. Though a Roman Catholic Priest and one of the founders of <!g>Big Bang cosmology, Lemaitre’s view was "two worlds": keep theology and science entirely separate.