Fr. David Alcalde is a professor at both the Instituto de Filosofía Edith Stein and the Instituto de Teología Lumen Gentium, located in Granada (Spain). He has PhDs in both astroph...view moreFr. David Alcalde is a professor at both the Instituto de Filosofía Edith Stein and the Instituto de Teología Lumen Gentium, located in Granada (Spain). He has PhDs in both astrophysics and theology.view less