In my opinion, one of the most interesting Church documents on the relationship between science and faith is St. John Paul II’s 1988 letter to Fr. George Coyne, who was head of the Vatican Observatory.
http://www.vatican.va/content/john-paul-ii/en/letters/1988/documents/hf_jp-ii_let_19880601_padre-coyne.html
http://www.vatican.va/content/john-paul-ii/en/letters/1988/documents/hf_jp-ii_let_19880601_padre-coyne.html
One of the really interesting themes is the problem of unity, both the unity of peoples around the world and the unity of science and religion. Within the modern Church JPII observes the growth of a “world consciousness” seeking for global unity:
Channeling P. Teilhard de Chardin, the Pope observes that both science and Catholicism offer us a view of the remarkable and complex unity of creation, its tendency toward convergence, its centering upon Christ.
As such, JPII sees that both religion and science have something to contribute to the further unification of peoples, the healing of a fragmented world, the building of an integrated community.
For it is precisely unity, especially the unity in Christ, that is the goal and purpose of the Church’s existence. Unity is also a principle of understanding and order, the drive of the human mind for scientific knowledge.