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Getting an Edgy View of the Rings of Uranus

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Ground-based near-IR camera images dark side of rings for first time.

Hank Hogan

Like its neighbor and fellow gas giant Saturn, Uranus is ringed. Although not gaudy, its rings are full of surprises, say researchers. At the University of California, Berkeley, at the Space Science Institute of Boulder, Colo., at the SETI Institute of Mountain View, Calif., and at the W.M. Keck Observatory in Kamuela, Hawaii, investigators took advantage of an infrequent celestial alignment to observe the dark side of the rings of Uranus. They found that the rings had significantly changed in brightness in comparison with images of the rings acquired by the passing Voyager spacecraft in...Read full article

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    Published: November 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 Sciencecelestial alignmentphotonicsResearch & TechnologyTech PulseUniversity of CaliforniaVoyager spacecraft

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