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A cameraman captures the "sun's" reflection of Ralph Alpher, distinguished research professor of physics, as he watches the Orrery (a working model of the solar system) in the Nott Memorial on Friday. Alpher, who developed the first mathematical model of the Big Bang theory, was filmed last week by a crew from VPRO, a public television station in the Netherlands that is preparing a show about him to be broadcast next month. The cosmologist also was featured in the July issue of Discover magazine.