[url]http://www.cnn.com/2014/03/26/tech/innovation/asteroid-rings/index.html?hpt=hp_t2[/url] [quote]The remote asteroid Chariklo orbits between Saturn and Uranus in the outer solar system. Researchers published a study in the journal Nature showing evidence of rings around it. Lead author Felipe Braga-Ribas of the Observatorio Nacional/MCTI in Rio de Janeiro said the discovery came as a complete surprise. "We weren't looking for a ring and didn't think small bodies like Chariklo had them at all," he said in a statement. Chariklo is fairly small -- 250 kilometers (150 miles) in diameter. It is classified as a "centaur," an object that has an unstable orbit and crosses giant planets' orbits. Mythological centaurs had both human and horse features, while centaurs in the solar system may have both comet and asteroid characteristics. The asteroid is only the fifth solar system object whose rings have been detected. Jupiter, Saturn, Uranus and Neptune also have rings.[/quote]