Milky Way Black Hole

In the middle of our own Milky Way Galaxy, lies a black hole. Two hundred billion stars revolve around it, drawn by its inexorable power -- a power driven by a mass four million times that of the sun. No one has ever seen a black hole, for no light can escape their boundless depths, but they do emit X-rays. The photo above shows X-rays made visible in an image of the Milky Way’s black hole, with matter swirling towards it. Have you ever wondered what's on the other side of a black hole?

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For more on the story, see the April 2008 issue of Smithsonian