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Huge Hole Found in Universe

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CHARLOTTESVILLE, Va., Aug. 24, 2007 -- Astronomers have found an enormous hole in the universe. Nearly a billion light-years across, it is empty of both normal matter such as stars, galaxies and gas, as well as the mysterious, unseen "dark matter." While earlier studies have shown holes, or voids, in the large-scale structure of the universe, this new discovery dwarfs them all. "Not only has no one ever found a void this big, but we never even expected to find one this size," said University of Minnesota astronomer professor Lawrence Rudnick. Rudnick, along with grad student Shea Brown and associate professor Liliya Williams,...Read full article

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    Published: August 2007
    Glossary
    astronomy
    The scientific observation of celestial radiation that has reached the vicinity of Earth, and the interpretation of these observations to determine the characteristics of the extraterrestrial bodies and phenomena that have emitted the radiation.
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    astronomyBasic ScienceBiophotonicshole in universeLawrence RudnicLiliya WilliamsNews & FeaturesNRAONRAO VLA Sky SurveyphotonicsUniversity of Minnesota

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