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Published online 8 November 2004 | Nature | doi:10.1038/news041108-2
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Second black hole found at the centre of our Galaxy
Seven stars orbiting the region identify the invisible object.
A second black hole lurks at the centre of our Galaxy, according to astronomers who have watched a cluster of stars spinning around it.
Just three years ago, astronomers confirmed that the Milky Way revolves around a supermassive black hole1, called Sagittarius A*, which is about 2.
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