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NASA photos: The Hubble is back

NASA photos, Hubble Space Telescope, Markarian 817 galaxy

Photo: NASA, ESA, Hubble SM4 ERO Team

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Say hello to Markarian 817

Taken on Aug. 2 with Hubble's Wide Field Camera 3, this picture gives a head-on view of the Markarian 817 galaxy. Past its rings of bright blue stars, an active core with a monster black hole shoots material into space at about nine million miles an hour.