CICLOPS: Cassini Imaging Central Laboratory for OPerationS

Dark Chasm
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Dark Chasm
PIA 20527

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  The low angle of the sun over Tethys' massive canyon, Ithaca Chasma (near the terminator, at right), highlights the contours of this enormous rift.

Ithaca Chasma is up to 60 miles (100 kilometers) wide, and runs nearly three-fourths of the way around icy Tethys (660 miles or 1,062 kilometers across). The canyon has a maximum depth of nearly 2.4 miles (4 kilometers) deep.

The giant crater Odysseus—usually one of Tethys’ most recognizable features-- is barely seen in profile along the limb, at upper left.

This view looks toward the Saturn-facing hemisphere of Tethys. North on Tethys is up and rotated 5 degrees to the left. The image was taken in green light with the Cassini spacecraft narrow-angle camera on Jan. 30, 2017.

The view was obtained at a distance of approximately 221,000 miles (356,000 kilometers) from Tethys. Image scale is 1 mile (2 kilometers) per pixel.


The Cassini Solstice Mission is a joint United States and European endeavor. 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 was designed, developed and assembled at JPL. The imaging team consists of scientists from the US, England, France, and Germany. The imaging operations center and team lead (Dr. C. Porco) are based at the Space Science Institute in Boulder, Colo.

For more information about the Cassini Solstice Mission visit http://ciclops.org, http://www.nasa.gov/cassini and http://saturn.jpl.nasa.gov.

Credit: NASA/JPL-Caltech/Space Science Institute
Released: April 24, 2017 (PIA 20527)
Image/Caption Information


Alliance Member Comments
Dragon_of_Luck_Mah_Jonng1971 (May 6, 2017 at 6:59 PM):
One of the best views yet of the entire mission of Ithaca Chasma on Tethys showing its remarkable depth in a global context.

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