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  1. Space

    Plenty of black holes do-si-do

    Team finds 33 merging galaxies with 'waltzing' black-hole pairs, suggesting the phenomenon is more common than thought.

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  2. Space

    Kepler space telescope finds its first extrasolar planets

    The NASA mission uncovers one Neptune-like and four Jupiter-like bodies.

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  3. Space

    New-found galaxies may be farthest back in time and space yet

    Potential finding uses data that push limits of current technology.

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  4. Earth

    Age of solar system needs a fresh look

    Honed measurements show age overshot by amount significant to earliest stage of formation.

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  5. On the Fringe

    Astronomers look to the Kuiper belt  for clues to the solar system’s history.