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Nature 415, 128-129 (10 January 2002) | doi:10.1038/415128a

Astronomy: X-rays reveal the Galaxy's centre

Andreas Eckart

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For twenty years astronomers have wondered what is responsible for the X-ray emission from the centre of our Galaxy. New data from the sharpest X-ray eye around — the Chandra observatory — reveal all.

By the middle of the twentieth century astronomers knew that our Solar System was located far from the centre of the Milky Way — that broad swath of starlight you can see on a clear night. So what is at the centre of our Galaxy?