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ALMA Weighs Supermassive Black Hole at Center of Distant Spiral Galaxy(图)
ALMA Weighs Supermassive Black Hole Distant Spiral Galaxy
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2015/7/13
Supermassive black holes lurk at the center of every large galaxy. These cosmic behemoths can be millions to billions of times more massive than the Sun. Determining just how massive, however, has bee...