Elihu A. Boldt, 77, a NASA astrophysicist who helped launch Goddard Space Flight Center's program in X-ray astronomy, died Sept. 12 at Doctors Community Hospital in Lanham after an apparent heart attack.

He was a Greenbelt resident and an adjunct physics professor at the University of Maryland. He was a fellow of the American Physical Society, among other professional affiliations, and served on scientific panels and committees.

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