Powerful forces ripped apart the surface of Tethys at some time in the
deep past, creating the incredible canyon system of Ithaca Chasma. This
view shows nearly the full extent of Ithaca Chasma, which slices across
more than 1,000 kilometers (620 miles) of the moon's icy surface.
The canyons are peppered with many impact craters, which obliterate the
older tectonic features and attest to the rift's great age. (See PIA07734
for a close-up view of a section of Ithaca Chasma.)
This view is centered on 30 degrees north latitude, 350 degrees west
longitude, on the Saturn-facing side of Tethys (1,062 kilometers, or 660
miles across). North is toward the top and rotated 9 degrees to the right.
The image was taken in visible green light with the Cassini spacecraft
narrow-angle camera on July 28, 2008. The view was acquired at a distance
of approximately 163,000 kilometers (101,000 miles) from Tethys and at a
Sun-Tethys-spacecraft, or phase, angle of 36 degrees. Image scale is 971
meters (3,186 feet) per pixel.
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/. The Cassini imaging team
homepage is at http://ciclops.org.