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Titan_and_Tethys-N00048632.jpgDancing in the dark: Tethys and Titan54 visitenessun commento
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Titan_and_Tethys-N00147394-96-EB-LXTT.jpgSaturnian Gems: Titan and Tethys (Natural Colors; credits: Elisabetta Bonora - Lunexit Team)55 visitenessun commentoMareKromium
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Titan_and_Tethys-PIA07705.jpgBright Brothers in the Night54 visiteCassini looks toward Tethys and its great crater Odysseus, while at the same time capturing veiled Titan in the distance (at left).
Titan is shrouded in a thick, smog-like atmosphere in which many small, potential impactors burn up before hitting the Planet's surface.
Crater-pocked Tethys has no such protective layer, although even a thick blanket of atmosphere would have done little good against the impactor that created Odysseus.
The eastern limb of Tethys is overexposed in this view.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Jan. 6, 2006, at a distance of approximately 4 MKM (about 2,5 MMs) from Titan and 2,7 MKM (about 1,7 MMs) from Tethys. The image scale is approx. 25 Km (about 16 miles) per pixel on Titan and approx. 16 Km (about 10 miles) per pixel on Tethys.
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Titan_and_Tethys-PIA12528.jpgMutual Event Sequence (Natural Colors; credits: NASA/JPL/Space Science Institute)57 visiteCaption NASA:"Saturn's moon Tethys with its prominent Odysseus Crater silently slips behind Saturn's largest moon Titan and then emerges on the other side.
Tethys is not actually enshrouded in Titan's Atmosphere. Tethys is more than twice as far from Cassini than Titan in this sequence: Tethys is about 2,2 MKM (such as approx. 1,4 MMs) from Cassini, while Titan is about only 1 MKM (approx. 621.000 miles) away.
These two color views were captured about 18 minutes apart, with the view on the right side taking place first.
These images are part of a so-called "Mutual Event Sequence" in which one moon passes close to or in front of another (from CASSINI point of view). Such observations help scientists refine their understanding of the orbits of Saturn's moons.
Images taken using red, green and blue spectral filters were combined to create this Natural Color view. The images were obtained with the Cassini Spacecraft narrow-angle camera on Nov. 26, 2009.
The images were obtained with the Cassini Spacecraft narrow-angle camera on Nov. 26, 2009.
Image scale is roughly 6 Km (a little less than 4 miles) per pixel on Titan and apprx. 13 Km (a little more than 8 miles) per pixel on Tethys".
MareKromium
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Titan_and_Tethys-PIA12745.jpgBrothers in the Night84 visiteCaption NASA:"The Cassini Spacecraft watches a pair of Saturn's moons, showing the hazy orb of giant Titan beyond smaller Tethys.
In the foreground of the image, Ithaca Chasma can be seen running roughly North-South for more than 1000 Km (about 620 miles) on Tethys. Titan's detached, high-altitude Haze Layer and North Polar "Hood" are also visible here.
This view looks toward the Saturn-facing sides of Titan and Tethys.
The image was taken in Visible Green Light with the Cassini Spacecraft narrow-angle camera on Oct. 18, 2010. The view was obtained at a distance of approx. 2,5 MKM (such as about 1,6 MMs) from Titan and at a Sun-Titan-Spacecraft, or Phase, Angle of 55°. The view was obtained at a distance of approx. 1,5 MKM(such as about 930.000 miles) from Tethys and at a Sun-Tethys-Spacecraft, or Phase, Angle of 55°".MareKromium
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Titan_and_Tethys-PIA14911.jpgTitan and Tethys (Natural Colors; credits: NASA/JPL-Caltech/Space Science Institute)98 visiteCaption NASA:"Saturn's moon Tethys, with its stark white Icy Surface, peeps out from behind the larger, hazy, colorful Titan in this view of the two moons obtained by NASA's Cassini Spacecraft. Saturn's Rings lie between the two Celestial Bodies.
Ithaca Chasma, a long series of Scarps or Cliffs on Tethys, can be seen faintly running North-South.
This view looks toward the side of Titan that is facing away from Saturn and the side of Tethys that is facing Saturn. This view looks toward the Northern, sunlit side of the Rings from just above the Ring-Plane. 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 narrow-angle camera on May 21, 2011, at a distance of approx. 1,4 MMs (about 2,3 MKM) from Titan and approx. 2,4 MMs (such as about 3,8 MKM) from Tethys. Image scale is roughly 9 miles (approx. 14 Km) per pixel on Titan and roughly 18 miles (approx. 27 Km) per pixel on Tethys".MareKromium
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