Guy Consolmagno

As an astronomer at the Vatican, Br. Guy Consolmagno, Ph.D. is both a celebrated and learned scientist and a Jesuit. His vast science credentials include earth and planetary science degrees from MIT and the University of Arizona, post-doctoral fellowships and lectureships at Harvard and MIT, and a physics professorship at Lafayette College, among other appointments.  As a scholar of religion, he studied philosophy and theology at the Jesuit novitiate in Wernersville and at Loyola University, with further studies in theology at Boston College and at the Graduate Theological Union.  As a Vatican astronomer since 1993, Brother Guy researches connections between meteorites, asteroids, and the evolution of small solar system bodies. 

Among the many elected offices he holds, Brother Guy serves on the IAU Working group for Planetary System Nomenclature, where he was one of those chosen to determine Pluto’s status as a planet. In 2000, an asteroid was named in recognition of his work, 4597 Consolmagno, or “Little Guy,” in astronomers’ casual parlance.  He writes a monthly science column for the British weekly The Tablet and has BBC Radio 4 program titled A Brief History of the End of Everything

To learn more about Guy Consolmango, visit or follow his blog,



Published work

The Heavens Proclaim (Our Sunday Visitor, June 2009); God’s Mechanics: How Scientists and Engineers Make Sense of Religion (Jossey Bass, October 2007); Brother Astronomer (McGraw-Hill, February 2001); Turn Left at Orion (Cambridge University Press, October 2000); The Way to the Dwelling of Light (University of Notre Dame Press, February 1999); Worlds Apart (Prentice Hall, October 1994).