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Space NASA Science

NASA Discovers Giant Ring Around Saturn 255

Posted by Soulskill from the headlines-that-aren't-as-stupid-as-they-sound dept.
caffiend666 writes with news that scientists using the Spitzer Space Telescope have discovered a very large, previously unknown ring around the planet Saturn. According to NASA, if the ring were visible to the naked eye from Earth, it would cover a patch of sky roughly twice the angular diameter of the Moon. "The new belt lies at the far reaches of the Saturnian system, with an orbit tilted 27 degrees from the main ring plane. The bulk of its material starts about six million kilometers away from the planet and extends outward roughly another 12 million kilometers. One of Saturn's farthest moons, Phoebe, circles within the newfound ring, and is likely the source of its material. Saturn's newest halo is thick, too — its vertical height is about 20 times the diameter of the planet. It would take about one billion Earths stacked together to fill the ring. ... The ring itself is tenuous, made up of a thin array of ice and dust particles. Spitzer's infrared eyes were able to spot the glow of the band's cool dust. The telescope, launched in 2003, is currently 107 million kilometers from Earth in orbit around the sun."
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