This ultraviolet image released July 7, 2004, from the Cassini spacecraft in orbit around Saturn shows, from the inside out, the 'Cassini division' in faint red at left is followed by the A ring in its entirety. The A ring begins with a 'dirty' interior of red followed by a general pattern of more turquoise as it spreads away from the planet, which indicates denser material made up of ice. The red band roughly three-fourths of the way outward in the A ring is known as the Encke gap. Such information hints at the origin and evolution of the rings, according to scientists at the University of Colorado at Boulder who are involved in the mission managed by NASA's Jet Propulsion Laboratory in Pasadena, Calif. This image was made by a $12.5 million instrument called the Ultraviolet Imaging Spectrograph, known as UVIS for short, that was built at Boulder. (AP Photo/University of Colorado, LASP)

Publicado por Manuel 16:37:00    

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