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Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

See Explanation. Clicking on the picture will download the highest resolution version available.

Saturn's Rings in Natural Color

Explanation: What colors are Saturn's rings? Recent images from the Cassini spacecraft now orbiting Saturn confirm that different rings have slightly different colors. The above image shows their sometimes-subtle differences in brightness and color. The rings reflect sunlight and so, even if they were perfectly reflecting, would appear the color of the Sun . The ring particles are mostly light water-ice, although these particles can be shaded by an unknown type of darker dirt . Thinner and more isolated rings also naturally appear darker. The brightest section pictured above is Saturn's B ring .

Date July 23, 2004
Credit Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.