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Titan (background) and Tethys (foreground). Image Credit: NASA/JPL/Space Science Institute
Shown in the visible-green light Cassini image above are two of Saturn’s moons, In the background you can see the hazy orb of Titan, with smaller Tethys in the foreground. The point of view in this image looks toward the Saturn-facing sides of Titan and Tethys.
The image was taken on Oct. 18, 2010, at a distance of roughly 2.5 million kilometers from Titan.
Source: NASA
Ray Sanders is a Sci-Fi geek, astronomer and blogger. Currently researching variable stars at Arizona State University, he writes for Universe Today, The Planetary Society blog, and his own blog, Dear Astronomer
2012-12-04 08:08:00
Source: http://www.dearastronomer.com/2012/07/30/titan-and-tethys/