NASA's Chandra X-ray Observatory has shed new light on the mystery of why giant elliptical galaxies have few, if any, young star

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Keywords: -ray, ., 1399, 4472, 4636, 5044, array, astrophysical, black, center, chandra, elliptical, flight, formation, foundation, galaxies, holes, jansky, karl, larg, large, marshall, nasa, national, ngc, observatory, science, smithsonian, space, star, supermassive