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Sean Walker

Sean Walker

Latest Processed Space Images

Tethys in enhanced color

March 18, 2016

Cassini captured this view of Tethys at nearly full phase on October 14, 2009. A composite of images captured through infrared, green, and ultraviolet filters enhances the color variations visible across Tethys' surface.

Tethys, Mimas, and the rings of Saturn

October 19, 2015

Cassini captured this picture-postcard view of the moons Mimas (top) and Tethys (bottom) floating near the rings on March 15, 2010.

Titan, Tethys, rings, and ringlit Saturn

April 10, 2012

On May 22, Cassini saw Tethys passing behind Titan as both appeared close to Saturn. Saturn's limb is actually in the image -- its ringlit northern hemisphere is visible as a curving patch of dark gray on the upper left.

astronaut on Phobos
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