| Piú votate - Titan: The "Foggy" Moon |
Titan-N00055567.jpgWhat's happening on Titan? (4)56 visiteCaption NASA:"N00055567.jpg was taken on March 20, 2006 and received on Earth March 20, 2006. The camera was pointing toward Titan that, at the time, was approximately 973.393 Km away.
The image was taken using the P0 and BL2 filters".
Nota: e se non si trattasse di un photoartifact, che cosa potrebbe essere il "punto" che abbiamo evidenziato?
(3 voti)
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Titan-N00055566.jpgWhat's happening on Titan? (3)58 visiteCaption NASA:"N00055566.jpg was taken on March 20, 2006 and received on Earth March 20, 2006. The camera was pointing toward Titan that, at the time, was approximately 972.794 Km away.
The image was taken using the P0 and UV3 filters".
(3 voti)
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Titan-PIA08126.jpgShining through the Rings...54 visiteCaption originale:"Titan's smoggy atmosphere glows brilliantly in scattered Sunlight, creating a thin, gleaming crescent beyond Saturn's Rings. At this slight angle above the Ring-Plane, the thin F-Ring shines brightly. Light from Titan's eastern and western limbs (edges) penetrates the Cassini Division, which looks like a thin gap from this angle.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Jan. 18, 2006, at a distance of approx. 1 MKM (such as about 600.000 miles) from Saturn. Planet-sized Titan (5.150 Km, or 3,200 miles across) was 2,2 MKM (about 1,4 MMs) from Cassini at that time. The image scale is 13 Km (8 miles) per pixel on Titan".
Nota: crediamo che sia la prima volta in cui la NASA, nel fornire i dati contingenti sul frame (ivi, in particolare, la distanza Sonda-Oggetto Ripreso), aggiunge la precisazione "...at that time...".
Ci teniamo a sottolineare che questo tipo di precisazione (a nostro parere fondamentale per far capire a tutti i Lettori - e soprattutto ai più giovani - che la "staticità" non appartiene al Cosmo) l'abbiamo introdotta noi, come Lun-Ex-It, in sede di integrazione dei dettati (captions) originali dei frames relativi a Saturno ed al suo Sistema.
(3 voti)
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Titan-PIA07707.jpgSmiling Titan...54 visiteThis infrared view shows features on the Leading Hemisphere of Titan, including the bright, crescent-shaped Hotei Arcus (right of center), which is also informally called "the Smile" by researchers.
The view is centered on the bright Region called Xanadu. Above center is the large crater Minerva, which is surrounded by darker material.
This image was taken with the Cassini spacecraft narrow-angle camera on Jan. 13, 2006 using a spectral filter sensitive to wavelengths of infrared light centered at 938 nnmts. The image was acquired at a distance of approx. 1,3 MKM (800.000 miles) from Titan and at a phase angle of 41°. Image scale is about 7 Km (approx. 5 miles) per pixel.
(3 voti)
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Titan_and_Tethys-PIA07705.jpgBright Brothers in the Night56 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.
(3 voti)
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Titan_and_Tethys-N00048632.jpgDancing in the dark: Tethys and Titan56 visitenessun commento
(3 voti)
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Titan-W00013114.jpgThe first clouds of the New "Titan" Year56 visiteOriginal caption:"W00013114.jpg was taken on January 15, 2006 and received on Earth January 16, 2006. The camera was pointing toward Titan that, at the time, was approximately 25.495 Km away, and the image was taken using the CB3 and CL2 filters.
This image has not been validated or calibrated".
(3 voti)
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Titan-W00012695.jpgTitans... (2)54 visiteOriginal caption:"W00012695.jpg was taken on December 26, 2005 and received on Earth December 27, 2005. The camera was pointing toward TITAN that, at the time, was approximately 25.404 Km away.
Te image was taken using the CL1 and RED filters".
(3 voti)
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Titan-W00012686.jpgTitans... (1)56 visiteOriginal caption:"W00012686.jpg was taken on December 26, 2005 and received on Earth December 27, 2005. The camera was pointing toward TITAN that, at the time, was approximately 23.945 Km away
The image was taken using the CL1 and RED filters".
(3 voti)
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Titan-Regions-Fensal_and_Aztlan_Region-PIA07634.jpgFensal-Aztlan Region56 visiteOriginal caption:"The H-shaped region Fensal-Aztlan is faintly visible on Saturn's murky moon Titan in this enhanced clear-filter view from Cassini.
While most of the light passing through the clear filters is visible light, a small portion of the light is in the treasured infrared windows that allow views down to the moon's frigid surface (nota: la NASA persiste nel definire Titano come un mondo "gelido". Forse è vero - a logica diremmo di si - ma i dati che possediamo non autorizzano ancora tale conclusione la quale, ovviamente, è ad oggi solo speculativa).
At the upper left, dark wavelike features in the atmosphere encircle the moon's North Pole.
The view shows principally the Saturn-facing Hemisphere on Titan; North is up and rotated 35° to the left.
The image was taken with the Cassini spacecraft narrow-angle camera on Oct. 7, 2005, at a distance of approximately 2,4 MKM (about 1,5 MMs) from Titan and at a phase angle of 33°. The image scale is 14 Km (about 9 miles) per pixel".
(3 voti)
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Titan-Dunes-PIA03568.jpgThe "Cat Scratches"55 visiteOriginal caption:"The geologic diversity of Titan's surface is well illustrated by this synthetic aperture radar image, obtained on Oct. 28, 2005, during the Cassini spacecraft's 9th Titan fly-by and 4th radar pass.
The bottom left and top right parts of the image show a series of parallel features resembling those discovered during the second radar pass. Called "cat scratches", these features may be dunes of water ice or hydrocarbon particles. The brighter area on the bottom right is thought to be rougher and possibly higher in elevation than the darker areas. Above the center of the image are dark, narrow winding channels carved by, and possibly still containing, liquids.
This image is about 300 by 250 Km and it is located 10° South Lat. and 292° West Long.".
(3 voti)
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Titan-Volcano-02.jpgThe Titanian Volcano (3)55 visiteCaption NASA originale:"From infrared images that show variations in brightness and texture, a geological map of a 'possible Titanian volcano', has been obtained using Cassini's VIMS. This geologic map shows that the circular feature has what appear to be several series of flows, as shown by the black lines. The flows represent episodes of activity on the volcano. A dark central pit, called a caldera, is similar to vents (----> aperture da sfogo; crepacci che fungono da sfogo) that appear above reservoirs of molten material on Earth's volcanoes. The colors on the map represent the brightness of features. Yellow and light green represent bright patches. Blue represents dark patches. Red represents mottled (----> screziato, a chiazze) material. The yellow area is where the volcano lies".
(3 voti)
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