American research astronomer and planetary scientist at the Vatican Observatory.
B.A. and M.A. at MIT, Ph.D. at the University of Arizona's Lunar and Planetary Laboratory, all in planetary science. After postdoctoral research and teaching at Harvard College Observatory and MIT, in 1983 he joined the US Peace Corps to serve in Kenya for two years, teaching astronomy and physics. After his return he took a position as Assistant Professor at Lafayette College in Easton, Pennsylvania....more
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