BROTHER GUY CONSOLMAGNO, SJ was born in Detroit, Michigan, earned undergraduate and masters' degrees in Earth and Planetary Sciences from MIT (in 1974 and 1975), and a Ph. D. in Planetary Science from the University of Arizona in 1978. He worked as a post-doctoral fellow and lecturer at Harvard University's Department of Astronomy, and MIT's Department of Earth and Planetary Sciences; served in the US Peace Corps, teaching physics at the University of Nairobi; and was a physics professor at Lafayette College in Pennsylvania, before entering the Jesuits as a brother in 1989. At the Vatican Observatory since 1993, his research explores connections between meteorites, asteroids, and the evolution of small solar system bodies.

FATHER PAUL R. MUELLER, SJ is a native of Cincinnati, Ohio. He attended a Jesuit high school and earned a degree in physics at Boston University before entering the Society of Jesus in 1982. As part of his Jesuit training, he earned masters degrees in both philosophy and theology, along the way developing an interest in religion-science issues. After being ordained a priest in 1993, he attended the University of Chicago, where he completed a third masters degree (in physics) and a doctorate in the history and philosophy of science through the interdisciplinary program in Conceptual Historical Studies of Science.