NASA has released an image of Saturn's two medium moons in one frame
Avi Blizovsky
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The Cassini mission continues to routinely issue images of the Saturn system. And this time the camera caught two birds with one stone. Saturn's moon Dione covers some of Saturn's distant coins while Tethys hovers below it. The diameter of Dion is 1,118 km while the diameter of Tethys is only 1,071 km.
The image allows an excellent contrast between the colors compared to previous images, of the faint bright formations in the trailing hemisphere (rear towards Saturn) of Dion. The giant Odysseus impact crater (which is 450 kilometers in diameter) is located near the Thetis crater. Compared to the scarred surface of Tethys, Dion looks the part from this distance.
The images were taken in visible light using Cassini's narrow-angle camera on March 19, 2005 at a distance of 2.7 million kilometers from Saturn. The scale of the image is about 15 kilometers per pixel.
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