| Ultimi arrivi - Saturn: the "Ringed Beauty" and His Moons |
Saturn-Storm.jpgSaturnian Storm90 visiteCaption NASA:"Late last year, a new, remarkably bright storm erupted in Saturn's Northern Hemisphere. Amateur astronomers first spotted it in early December, with the Ringed Gas Giant rising in Planet Earth's predawn Sky.
Orbiting Saturn, the Cassini Spacecraft was able to record this close-up of the complex disturbance from a distance of about 1,8 MKM on December 24th, 2010.
Over time, the storm has evolved, spreading substantially in longitude, and now stretches far around the Planet. Saturn's thin Rings are also seen slicing across this space-based view, casting broad shadows on the Planet's Southern Hemisphere".MareKromiumGen 20, 2011
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Saturnian_Sky-N00166739-47-EB-LXTT.jpgSaturnian Sky (Superdefinition - credits for the additional process.: Elisabetta Bonora - Lunexit Team)55 visitenessun commentoMareKromiumGen 16, 2011
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Hyperion-PIA12748.jpgInteresting Optical Illusion on Hyperion (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga)103 visiteCaption NASA:"The Cassini Spacecraft captures a view of the Southern Latitudes of Saturn's "tumbling" moon Hyperion. Lit Terrain seen here is mostly in the Southern Hemisphere of Hyperion (approx. 270 Km or about 168 miles across). The South Pole of the moon is near the bottom of the illuminated Terrain seen here.
The image was taken in Visible Light with the Cassini Spacecraft narrow-angle camera on Nov. 28, 2010. The view was obtained at a distance of approx. 80.000 Km (about 50.000 miles) from Hyperion and at a Sun-Hyperion-Spacecraft, or Phase, Angle of 98°.
Image scale is roughly 476 meters (1562 feet) per pixel".MareKromiumGen 12, 2011
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Rhea-PIA12746.jpgRhea's Terminator (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)154 visiteCaption NASA:"The Cassini Spacecraft captured this High-Resolution view of the Cratered Surface of Saturn's moon Rhea as the Spacecraft flew by this Celestial Body on October 17, 2010.
This view is centered on highly Cratered Terrain located at approx. 60° North Lat. and 251° West Long.
The image was taken in Visible Light with the Cassini Spacecraft narrow-angle camera. The view was acquired at a distance of approx. 40.000 Km(such as about 25.000 miles) from Rhea and at a Sun-Rhea-Spacecraft, or Phase, Angle of 88°.
Image scale is roughly 238 meters (781 feet) per pixel".MareKromiumGen 03, 2011
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Saturn-W00065995-98-MF-LXTT.jpgHigh-Latitude Superstorm-Cell on Saturn (Superdefinition and Natural Colors; credits for the additional process. and color.: Dr Marco Faccin - Lunexit Team)167 visitenessun commentoMareKromiumDic 29, 2010
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Rhea-PIA12809-PCF-LXTT.jpgThe Heavily Fractured Surface of Rhea (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)104 visiteCaption NASA:"Icy Fractures on Saturn's moon Rhea reflect Sunlight brightly in this High-Resolution Mosaic created from images captured by NASA's Cassini Spacecraft during its March 2, 2010, Fly-By. This Fly-By was the closest one of Rhea up to then.
This mosaic of six images shows the Westernmost portion of the moon's "Wispy" Terrain. Among the interesting features depicted here is a very straight East-West Fracture near the top center of the mosaic that intersects two North-South Fractures. The large Crater at the bottom left of the mosaic is Inmar Crater (about 55 Km, or approx. 34 miles across).
The closest approach of the Spacecraft to Rhea during this encounter was of about 100 Km (approx. 62 miles). These images were obtained approximately 30 minutes later, at an altitude of about 16.000 Km (roughly 10.000 miles).
This mosaic shows part of the side of Rhea that always faces Saturn. The images were re-projected in an orthographic projection centered on Terrain at 7° North Latitude and 296° West Longitude. The mosaic itself shows Features centered on Terrain that is at 6° North Latitude and 293° West Longitude.
The images were taken with the Cassini Spacecraft narrow-angle camera. The view was obtained at a Sun-Rhea-Spacecraft, or Phase, Angle of about 2°. So, Cassini was almost directly between Rhea and the Sun as it acquired these images.
Image scale is roughly 85 meters (280 feet) per pixel".MareKromiumDic 25, 2010
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Dione-N00165580-82-EB-LXTT.jpgPossible Transient Luminous Phenomenon on the "Dark Side" of Dione144 visiteLa Natura del piccolo "flash" individuato nelle Regioni Equatoriali di Dione, è bene dirlo a chiare lettere, non può essere in alcun modo stabilita con certezza.
Dall'analisi di dettaglio del frame, comunque, possiamo estrapolare alcune ipotesi, che Vi elenchiamo in ordine di fondatezza/verosimiglianza (a nostro parere, come ovvio):
1) Bagliore da Impatto Meteorico - Meteor Strike's related/caused Flash;
2) Fiaccola di origine ignota (magari un outgassing?) - Flare of unknown origin (l'equivalente Dioniano di un TLP);
3) Artefatto Fotografico da perdita di segnale - image artifact due to lack of signal;
4) Artefatto Fotografico a causa indeterminata - image artifact due to an undetermined cause .MareKromiumDic 23, 2010
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Dione-N00165585-89-EB-LXTT.jpgCrescent Dione (an Image-Mosaic by Elisabetta Bonora - Lunexit Team)126 visitenessun commentoMareKromiumDic 22, 2010
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Enceladus-N00165592-165603-MF-LXTT.gifHuge "Spurt" from Enceladus (a GIF-Movie by Dr Marco Faccin - Lunexit Team)131 visiteSolo una nota: questo GIF-Movie è stato pubblicato IERI, 21 Dicembre 2010, sulle Pagine Flickr dei nostri Partner Marco FACCIN ed Elisabetta BONORA.
La NASA, con tutte le sue "menti" ed i suoi "immensi mezzi", ha evidenziato il fenomeno solamente oggi, dopo aver visitato le pagine Flickr di cui sopra.
Ogni ulteriore commento ci sembra superfluo...MareKromiumDic 22, 2010
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Enceladus-N00165329-30-31-EB-PCF-LXTT.jpgEnceladus (an Image-Mosaic in enhanced Absolute Natural Colors; credits for the additional process. and color.: Elisabetta Bonora - Lunexit Team)90 visitenessun commentoMareKromiumDic 21, 2010
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Dione-PIA12743.jpgErulus Crater (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)73 visiteCaption NASA:"The Cassini spacecraft snapped this shot of cratered Dione as it flew by the Saturnian moon on Oct. 17, 2010. The large crater at the center of the image is Erulus, which is about 120 Km, or approx. 75 miles, across. This view looks toward the Southern Latitudes of the Leading Hemisphere of Dione.
The image was taken in Visible Light with the Cassini Spacecraft narrow-angle camera. The view was acquired at a distance of approximately 41.000 Km (such as about 25.000 miles) from Dione and at a Sun-Dione-Spacecraft, or Phase, Angle of 53°.
Image scale is roughly 240 meters (787 feet) per pixel".MareKromiumDic 14, 2010
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Tethys-PIA12802.jpgThe "Face" of Tethys (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)80 visiteCaption NASA:"Geologic faults among craters on Saturn's moon Tethys are depicted in this image captured during a Fly-By of the moon by NASA's Cassini Spacecraft on Aug. 14, 2010.
The brightly illuminated, prominent Impact Crater near the bottom middle of this image has been dissected by numerous parallel Faults that run diagonally across the image. The presence of the Faults that cut through the Crater and the movement of Surface Materials have made the Crater outline somewhat non-circular.
Near the center of the image, running diagonally from the left to right, is an old Graben, such as a "Linear Depression of the Terrain between two Faults".
Below these Faults and near the middle top of the image is a large ancient Impact Crater that is so highly overprinted by more recent Craters that it can barely be recognized.
On the left of the image, there are some horizontal lines that can be seen very faintly cutting across Craters. These lines are artifacts of missing data in the raw image that could not be eliminated through processing the image.
This view looks toward the Leading Hemisphere of Tethys. The view is centered on terrain at 59° North Latitude and 79° West Longitude.
The image was taken in Visible Light with the Cassini Spacecraft narrow-angle camera. The view was acquired at a distance of approx. 40.000 Km (such as about 25.000 miles) from Tethys and at a Phase Angle of 103°. Image scale is roughly 234 meters (767 feet) per pixel".MareKromiumDic 14, 2010
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