A masterpiece of deep time and wrenching gravity, the tortured surface of
Saturn's moon Enceladus and its fascinating ongoing geologic activity tell
the story of the ancient and present struggles of one tiny world. This is
a story that is recounted by imaging scientists in a paper published in
the journal Science on March 10, 2006.
The enhanced color view of Enceladus seen here is largely of the southern
hemisphere and includes the south polar terrain at the bottom of the
image.
Ancient craters remain somewhat pristine in some locales, but have clearly
relaxed in others. Northward-trending fractures, likely caused by a change
in the moon's rate of rotation and the consequent flattening of the moon's
shape, rip across the southern hemisphere. The south polar terrain is
marked by a striking set of `blue' fractures and encircled by a
conspicuous and continuous chain of folds and ridges, testament to the
forces within Enceladus that have yet to be silenced.
The mosaic was created from 21 false-color frames taken during the Cassini
spacecraft's close approaches to Enceladus on March 9 and July 14, 2005.
Images taken using filters sensitive to ultraviolet, visible and infrared
light (spanning wavelengths from 338 to 930 nanometers) were combined to
create the individual frames.
The mosaic is an orthographic projection centered at 46.8 degrees south
latitude, 188 degrees west longitude, and has an image scale of 67 meters
(220 feet) per pixel. The original images ranged in resolution from 67
meters per pixel to 350 meters (1,150 feet) per pixel and were taken at
distances ranging from 11,100 to 61,300 kilometers (6,900 to miles) from
Enceladus.
The Cassini-Huygens mission is a cooperative project of NASA, the European
Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory,
a division of the California Institute of Technology in Pasadena, manages
the mission for NASA's Science Mission Directorate, Washington, D.C. The
Cassini orbiter and its two onboard cameras were designed, developed and
assembled at JPL. The imaging operations center is based at the Space
Science Institute in Boulder, Colo.
For more information about the Cassini-Huygens mission visit
http://saturn.jpl.nasa.gov/home/index.cfm. The Cassini imaging team
homepage is at http://ciclops.org.
