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Astronomy Picture of the Day
Southern Saturn from Cassini
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#53447
by
[z]Barbara Harris
@
19.10.2004 00:00
- nach oben -
Southern Saturn from Cassini
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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