On camping trips in northern Ontario as a Boy Scout, David Charbonneau, Ph.D. ’01, Cabot associate professor of astronomy, remembers looking up and watching the stars. “I’d lie on my back with a little star map,” he says, “and try to piece together constellations.” The son of a geologist and a psychiatrist, Charbonneau studied physics, math, and astronomy at the University of Toronto, where he also joined a co-op and applied his scientific acumen to brewing homemade stout. While a graduate student at Harvard, he remained active in co-ops by tutoring at one (through Dudley House) and founding another during a year-long stay in Boulder. In Colorado he also made an important discovery at the High Altitude Observatory. Until 1999, astronomers possessed only indirect evidence of planets in other solar systems, but by measuring the change in a star’s brightness during an eclipse, Charbonneau proved the existence of the planet causing it (see “Distant Planets,” July-August 2000, page 22). That research won him a fellowship to Caltech for postdoctoral study, during which he flew back East on weekends to visit his wife, who was doing her residency at Boston-area hospitals. He joined the Harvard faculty in 2004 and recently received a Packard Fellowship to build eight 16-inch telescopes at the Whipple Observatory on Mount Hopkins in Arizona. His original research turned up only “gas giants”; he will target the new scopes to identify small, rocky planets like our own. “We really are poised,” he says, “to understand whether the solar system is commonplace throughout the galaxy, or whether we’re unique.”
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