Blue ring discovered around Uranus; Second known blue ring in solar system

The outermost ring of Uranus, discovered just last year, is bright blue, making it only the second known blue ring in the solar system, according to a report this week in the journal Science. Perhaps not coincidentally, both blue rings are associated with small moons.

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<p><a href="http://www.physorg.com/news63610555.html">Blue ring discovered around Uranus; Second known blue ring in solar system</a></p> <p>The outermost ring of Uranus, discovered just last year, is bright blue, making it only the second known blue ring in the solar system, according to a report this week in the journal <i>Science</i>. Perhaps not coincidentally, both blue rings are associated with small moons.</p>