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| Piú viste - Titan: The "Foggy" Moon |
Titan-Clouds-North_Polar_Clouds-PIA10511.jpgBright Northern Clouds on Titan (natural colors; credits: Lunexit)100 visiteCaption NASA:"Bright clouds circumscribe Titan's North Polar Region: a frigid land of Methane Seas.
The clouds seen in this image and other recent Cassini Spacecraft views are at higher latitudes than similar streak-like clouds observed in the Southern Hemisphere (see PIA08966). Scientists are working to understand why such clouds appear preferentially at certain latitudes on Saturn's largest moon.
While the streaks that grace Titan's Southern Hemisphere are often seen at 40° South Latitude, similar to Wellington, New Zealand, the streaks in the Northern Hemisphere are farther from the Equator, near 56° North Latitude, which is similar to Glasgow, Scotland. North on Titan is up and rotated 16° to the right.
The image was taken with the Cassini spacecraft narrow-angle camera on Sept. 30, 2008 using a spectral filter sensitive to wavelengths of infrared light centered at 938 nanometers. The view was obtained at a distance of approx. 1,2 MKM (such as about (776.000 miles) from Titan and at a Sun-Titan-Spacecraft, or Phase, angle of 71°.
Image scale is 7 Km (about 4,5 miles) per pixel".MareKromium
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Titan_and_Dione-PIA14910.jpgTitan and Dione (Natural Colors; credits: NASA/JPL-Caltech/Space Science Institute)100 visiteCaption NASA:"Saturn's third-largest moon, Dione, can be seen through the Haze of the Ringed-Planet's largest moon, Titan, in this Cassini Spacecraft's view of the two, just posing before Saturn and its Rings. The North Polar "Hood" of Titan can be seen appearing as a detached layer at its top
This view looks toward the sides of Titan and Dione that are facing away from Saturn. North is up on both moons. 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 obtained with the Cassini Spacecraft narrow-angle camera on May 21, 2011, at a distance of approx. 1,4 MMs (such as about 2,3 MKM) from Titan and approx. 2 MMs (such as about 3,2 MKM) from Dione. Image scale is roughly 9 miles (about 14 Km) per pixel on Titan and roughly 12 miles (approx. 19 Km) on Dione".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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Titan-Lakes-South_Polar_Lake-01-PIA06241-PCF-LXTT-IPF-002.jpgOntario Lacus and the South Polar Regions of Titan: after the Fog (Absolute Natural Colors; credits for the additional process. and color. Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)97 visiteThis view of Titan’s South Pole reveals the intriguing Dark Feature named Ontario Lacus and a host of smaller features dotting the whole South Polar Region. The true nature of this Surface Feature, seen here at left of center, is not yet known with absolute certainty. However, the Feature’s extremely dark coloration, the shore-like smoothness of its perimeter, and its presence in an area where frequent Convective Storm Clouds have been observed by the NASA - Cassini Spacecraft and Earth-based telescopes, made it the best candidate for an open body of liquid on Titan when this image was taken, in June 2005. This interpretation has, afterwards, been strengthened by the sighting of Surface Features having similar morphologies, but this time in Titan’s North Polar Regions during the Fly-By of this Saturnian moon that occurred in late February of the AD 2007. The possibility that those Northern Features, the sizes of small Seas, are either completely or partially filled with Liquid Hydrocarbons has been significantly strengthened also by the Radar Data collected by Cassini and which overlap portions of the Northern Features seen by the Cassini's Imaging Science Subsystem.
Previously, scientists had speculated that Ontario Lacus might simply be a Broad Depression filled by dark, Solid Hydrocarbons falling from the Atmosphere onto Titan’s Surface. In this case, the smoothed outline might be the result of a process unrelated to Rainfall, such as a so-called "Sinkhole" (---> a cavity in the ground, especially in a limestone formation, caused by water erosion and providing a route for Surface Water to disappear) or a "Volcanic Caldera". However, the strong likelihood that the Dark and Smooth North Polar Features are actually Lakes and Seas has made imaging scientists more confident that Ontario Lacus, and the smaller Dark Features dotting the South Polar Regions of Titan, also hold liquid. If correct, this new revelation would mean that each Pole on Titan is, in fact, a large Wetlands Area. The brightest (and almost white) Features seen here (from about 3 to 6 o'clock of the picture), are Methane Clouds (perhaps mixed with Water-Ice Clouds).
The original frame that we show you today, was taken by the NASA - Cassini Spacecraft during the distant Fly-By of Titan that took place in June 6, of the AD 2005, by using a combination of Spectral Filters sensitive to Wavelengths of Polarized InfraRed Light, allowing Cassini to see through the obscuring smog of Titan's Atmosphere and all the way down to the Surface. The image was acquired from an approximate distance of 450.000 Km (such as about 279.450 miles) from Titan. Resolution in the original image is approximately 3 Km (such as 1,863 miles) per pixel.
This picture (which is an Original NASA - Cassini Spacecraft b/w frame published on the NASA - Planetary Photojournal and identified by the n. PIA 06241) has been additionally processed and then colorized, as if the yellowish Fogs that surrounds the planet had been overcome. The colorization, even in this case, has been made according to an educated guess carried out by Dr Paolo C. Fienga (LXTT-IPF), in Absolute Natural Colors (such as the colors that a human eye would actually perceive if someone were onboard the NASA - Cassini Spacecraft and then looked outside, towards the South Polar Region of the Saturnian moon Titan), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team. Different colors, as well as different shades of the same color, mean, among others, the existence of different Elements present in the Atmosphere and on the Surface of Titan, each having a different Albedo (---> Reflectivity) and Chemical Composition.
Note: it is possible (but we, as IPF, have no way to be one-hundred-percent sure of such a circumstance), that the actual luminosity of the Albedo Features seen in this frame would appear, to an average human eye, way lower than it has been shown (better yet: interpreted) here.MareKromium
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Titan-Clouds-Water_Ice_Clouds-MF-LXTT.jpgWater-ice Clouds' Complex on Titan (an Image-Mosaic by Dr Marco Faccin - Lunexit Team)96 visitenessun commentoMareKromium
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Titan-W00039722.jpgThrough the Fogs... (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)95 visitenessun commentoMareKromium
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Titan-PIA14602.jpgTitan (Natural Colors; credits: NASA/JPL-Caltech/Space Science Institute)95 visiteCaption NASA:"Titan's Atmosphere makes Saturn's largest moon look like a 'fuzzy orange ball' in this Natural Color view from the Cassini Spacecraft. Titan's North Polar Hood is visible at the top of the image, and a faint blueish Haze also can be detected above the South Pole at the bottom of this view. Recent Cassini images suggest Titan's North Polar Vortex, or 'Hood', is beginning to flip from North to South (see PIA14913). This view looks toward the Anti-Saturn Side of Titan. North is up.
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 wide-angle camera on Jan. 30, 2012 at a distance of approximately 119.000 miles (about 191.000 Km) from Titan. Image scale is roughly 7 miles (about 11 Km) per pixel".MareKromium
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Titan_and_Saturn-PIA14909.jpgTitan and Saturn (Natural Colors; credits: NASA/JPL-Caltech/Space Science Institute)94 visiteCaption NASA:"The colorful globe of Saturn's largest moon, Titan, passes in front of the Planet and its Rings in this True Color snapshot from NASA's Cassini Spacecraft.
The North Polar "Hood" can be seen on Titan and appears as a detached layer at its top. 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 image was obtained 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. Image scale is roughly 9 miles (apèprox. 14 Km) per pixel on Titan".MareKromium
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Titan-MF-EB-LXTT-IPF~0.jpgLakeland (Natural Colors; credits for the additional process. and color.: Elisabetta Bonora and Marco Faccin/LXTT/IPF)94 visiteIl Polo Nord di Titano, con i suoi Grandi Laghi di "Idrocarburi Affioranti" che emergono dalla nebbia. Bellissima.MareKromium
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Titan-N00155017-21-44-EB-LXTT2.jpgNot Only "Yellow"... (an Image-Mosaic in Natural Colors by Elisabetta Bonora - Lunexit Team)93 visitenessun commentoMareKromium
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Titan-MF-EB-LXTT-03.jpgThe Titanian "South Polar Vortex" is still going on! (Superdefinition and Enhanced Natural Colors; credits for the additional process. and color.: Elisabetta Bonora and Marco Faccin /Lunar Explorer Italia/IPF)93 visitenessun commentoMareKromium
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Titan-Lakes-South_Polar_Lake-01-PIA06241-PCF-LXTT-IPF-001.jpgOntario Lacus and the South Polar Regions of Titan (Absolute Natural Colors; credits for the additional process. and color. Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)93 visiteThis view of Titan’s South Pole reveals the intriguing Dark Feature named Ontario Lacus and a host of smaller features dotting the whole South Polar Region. The true nature of this Surface Feature, seen here at left of center, is not yet known with absolute certainty. However, the Feature’s extremely dark coloration, the shore-like smoothness of its perimeter, and its presence in an area where frequent Convective Storm Clouds have been observed by the NASA - Cassini Spacecraft and Earth-based telescopes, made it the best candidate for an open body of liquid on Titan when this image was taken, in June 2005. This interpretation has, afterwards, been strengthened by the sighting of Surface Features having similar morphologies, but this time in Titan’s North Polar Regions during the Fly-By of this Saturnian moon that occurred in late February of the AD 2007. The possibility that those Northern Features, the sizes of small Seas, are either completely or partially filled with Liquid Hydrocarbons has been significantly strengthened also by the Radar Data collected by Cassini and which overlap portions of the Northern Features seen by the Cassini's Imaging Science Subsystem.
Previously, scientists had speculated that Ontario Lacus might simply be a Broad Depression filled by dark, Solid Hydrocarbons falling from the Atmosphere onto Titan’s Surface. In this case, the smoothed outline might be the result of a process unrelated to Rainfall, such as a so-called "Sinkhole" (---> a cavity in the ground, especially in a limestone formation, caused by water erosion and providing a route for Surface Water to disappear) or a "Volcanic Caldera". However, the strong likelihood that the Dark and Smooth North Polar Features are actually Lakes and Seas has made imaging scientists more confident that Ontario Lacus, and the smaller Dark Features dotting the South Polar Regions of Titan, also hold liquid. If correct, this new revelation would mean that each Pole on Titan is, in fact, a large Wetlands Area. The brightest (and almost white) Features seen here (from about 3 to 6 o'clock of the picture), are Methane Clouds (perhaps mixed with Water-Ice Clouds).
The original frame that we show you today, was taken by the NASA - Cassini Spacecraft during the distant Fly-By of Titan that took place in June 6, of the AD 2005, by using a combination of Spectral Filters sensitive to Wavelengths of Polarized InfraRed Light, allowing Cassini to see through the obscuring smog of Titan's Atmosphere and all the way down to the Surface. The image was acquired from an approximate distance of 450.000 Km (such as about 279.450 miles) from Titan. Resolution in the original image is approximately 3 Km (such as 1,863 miles) per pixel.
This picture (which is an Original NASA - Cassini Spacecraft b/w frame published on the NASA - Planetary Photojournal and identified by the n. PIA 06241) has been additionally processed and then colorized, according to an educated guess carried out by Dr Paolo C. Fienga (LXTT-IPF), in Absolute Natural Colors (such as the colors that a human eye would actually perceive if someone were onboard the NASA - Cassini Spacecraft and then looked outside, towards the South Polar Region of the Saturnian moon Titan), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team. Different colors, as well as different shades of the same color, mean, among others, the existence of different Elements present in the Atmosphere and on the Surface of Titan, each having a different Albedo (---> Reflectivity) and Chemical Composition.
Note: it is possible (but we, as IPF, have no way to be one-hundred-percent sure of such a circumstance), that the actual luminosity of the Albedo Features seen in this frame would appear, to an average human eye, way lower than it has been shown (better yet: interpreted) here.MareKromium
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