Showing posts with label tethys. Show all posts
Showing posts with label tethys. Show all posts
Tuesday, 8 August 2017
Saturn Titan and Tethys
Saturn Titan and Tethys

Titan emerges from behind Saturn, while Tethys streaks into view, in this colorful scene. Saturns shadow darkens the far arm of the rings near the planets limb.
Titan is 5,150 kilometers (3,200 miles) wide; Tethys is 1,071 kilometers (665 miles) wide.
This view looks toward the unilluminated side of the rings from about 3 degrees above the ringplane. Images taken using red, green and blue spectral filters were combined to create this natural color view. The images were acquired with the Cassini spacecraft wide-angle camera on Jan. 30, 2008 at a distance of approximately 1.3 million kilometers (800,000 miles) from Saturn. Image scale is 77 kilometers (48 miles) per pixel on Saturn.
Image Credit: NASA/JPL/Space Science Institute
Explanation from: https://photojournal.jpl.nasa.gov/catalog/PIA09864
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Thursday, 3 August 2017
Saturn and Tethys
Saturn and Tethys

NASAs Cassini gazes across the icy rings of Saturn toward the icy moon Tethys, whose night side is illuminated by Saturnshine, or sunlight reflected by the planet.
Tethys was on the far side of Saturn with respect to Cassini here; an observer looking upward from the moons surface toward Cassini would see Saturns illuminated disk filling the sky.
Tethys was brightened by a factor of two in this image to increase its visibility. A sliver of the moons sunlit northern hemisphere is seen at top. A bright wedge of Saturns sunlit side is seen at lower left.
This view looks toward the sunlit side of the rings from about 10 degrees above the ring plane. The image was taken in visible light with the Cassini spacecraft wide-angle camera on May 13, 2017.
The view was acquired at a distance of approximately 750,000 miles (1.2 million kilometers) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 140 degrees. Image scale is 43 miles (70 kilometers) per pixel on Saturn. The distance to Tethys was about 930,000 miles (1.5 million kilometers). The image scale on Tethys is about 56 miles (90 kilometers) per pixel.
Image Credit: NASA/JPL-Caltech/Space Science Institute
Explanation from: https://photojournal.jpl.nasa.gov/catalog/PIA21342
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