Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.astronet.ru/db/xware/msg/apod/2004-10-18
Дата изменения: Mon Oct 18 10:32:21 2004
Дата индексирования: Sat Dec 29 00:56:09 2007
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Southern Saturn from Cassini
Astronomy Picture of the Day
    


Southern Saturn from Cassini
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Southern Saturn from Cassini
Credit: Cassini Imaging Team, SSI, JPL, ESA, NASA
Explanation: What happens to Saturn's pervasive clouds at its South Pole? Visible in the above image of Saturn are bright bands, dark belts and a dark spot right over the South Pole. The above image in infrared light spans over 30,000 kilometers and was taken early last month by the robot Cassini spacecraft currently orbiting Saturn. Saturn's atmosphere is about 75 percent hydrogen, 25 percent helium, and small amounts of heavier compounds including water vapor, methane, and ammonia. The relatively low gravity at Saturn's cloud tops result in a thicker haze layer, which in turn makes atmospheric features blurrier than Jupiter.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Based on Astronomy Picture Of the Day

Publications with keywords: Saturn - south pole - cassini spacecraft
Publications with words: Saturn - south pole - cassini spacecraft
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