Austin+S.

= **Destination-Saturn** = Saturn is basically one big atmosphere - there is no real surface to the planet. Its composition is nearly all H2; the rest is approximately:
 * Average distance from sun- 1,426,725,400 km (886,526,100 miles) **
 * Diameter- 116,464 (72,367 miles) **
 * Volume- 755 times the earth **
 * Mass- 568,460,000,000,000,000,000,000,000 kg. (95.16 times the Earths) **
 * Length of day- 10.656 Earth hours **
 * Length of year- 29.45 Earth years **
 * Known Moons- 56 **


 * H2: 96.3±2.4%
 * He: 3.25±2.4%
 * CH4: 0.45±0.2%
 * NH3: 0.0125±0.075%
 * HD: 0.011±0.0058%
 * C2H6: 0.0007±0.00015%

** Rotaton- longer than 79 days **
====  This color composite image of Saturn's moon Iapetus came from Cassini's Visual and Infrared Mapping Spectrometer. The upper bright blue region is rich in water and ice. The lower dark brown region is composed mainly of a substance rich in organic material. The yellow region consists of a mixture of ice and organics. ====

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