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Over the past few years, astronomers have accumulated evidence that the mass of stars surrounding a galaxy's center is always about 1,000 times the mass of the galaxy's supermassive black hole (SN: 1/22/05, p. Supermassive black holes, once known only in theory, may be sucking in gas and stellar matter at a voracious rate in the center of virtually every large galaxy in the universe. The detailed observations that the craft has made in a handful of cases may therefore apply to supermassive black holes across the universe. |
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