Credit:
NASA/JPL/University of Arizona
NASA recently published an outstanding image of Saturn's largest moon,
Titan, showing giant cloud system covering the moon's north pole.
The image was acquired with Cassini's visual and infrared mapping
spectrometer, during a flyby designed to observe Titan's limb. The flyby
occurred on 29 December 2006. The image scans the north pole down to a latitude
of 62° North, and at all observed longitudes.
Atmospheric circulation models of Titan predicted such cloud patterns, but
they had never been observed before in such detail. The condensates may be the
source of liquids that fill Titan's lakes, discovered recently by radar
instruments.
The image, taken from a distance of approximately 90,000 km, was color-coded in blue, green and red for the 2 µm, 2.7 µm and 5 µm wavelengths,
respectively.
Further reading
Titan
http://saturn.jpl.nasa.gov/science/moons/moonDetails.cfm?pageID=16
Cassini-Huygens Mission
http://saturn.jpl.nasa.gov/home/index.cfm
Aymen Mohamed Ibrahem
Senior Astronomy Specialist