Astronomers release all-sky map cataloguing 500,000 supermassive black holes

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The Sloan Digital Sky Survey (SDSS) has published a comprehensive all-sky map identifying approximately half a million supermassive black holes. The map was produced as part of the Black Hole Mapper program, a major observational survey project. This release represents a significant milestone in cataloguing black hole populations across the observable universe. The data is publicly available and is expected to support a wide range of astrophysical research into the nature and distribution of supermassive black holes.

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