| Piú viste - Saturn: the "Ringed Beauty" and His Moons |
Dione-N00048330.jpgThe Marvelous Face of Dione (possible True Colors; credits: Dr M. Faccin & Lunar Explorer Italia)56 visitenessun commentoMareKromium
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Saturn-W00051152.jpgSaturn: from b&w to Natural Colors (by Dr M. Faccin)56 visitenessun commentoMareKromium
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Saturn-PIA11453.jpgShadows (Natural Colors; credits: NASA/JPL/Space Science Institute)56 visiteCaption NASA:"Saturn's Rings cast a dramatic shadow separating the blues and greens of the Planet's Northern Hemisphere from the creamy pastels coloring the Southern Hemisphere.
This mosaic combines 6 images — 2 each of red, green and blue spectral filters — to create this Natural Color view. The images were obtained with the Cassini Spacecraft wide-angle camera on Dec. 30, 2008 at a distance of approx. 1,2 MKM (such as about 750.000 miles) from Saturn and at a Sun-Saturn-Spacecraft, or Phase, Angle of 30°.
Image scale is roughly 67 Km (about 42 miles) per pixel".MareKromium
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Enceladus_Approach.jpgApproaching Enceladus, from Voyager 256 visitenessun commentoMareKromium
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PIA07966-112203.wavAudio Signals from the the Space of Saturn (by Dr M. Faccin)56 visitenessun commentoMareKromium
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The_Rings-PIA11470.jpgMorning Spokes (Natural Colors; credits: Lunar Explorer Italia)56 visiteCaption NASA:"Bright spokes emerge from behind the shadow of the Planet and into sunlight in this view from the Cassini Spacecraft.
Saturn's long shadow covers the left side of the image. This view looks toward the sunlit side of the Rings from about 22° below the Ring-Plane.
The image was taken in visible light with the Cassini Spacecraft wide-angle camera on Feb. 26, 2009. The view was acquired at a distance of approx. 821.000 Km (about 510.000 miles) from Saturn and at a Sun-Saturn-Spacecraft, or Phase, Angle of 150°.
Image scale is roughly 46 Km (about 29 miles) per pixel".MareKromium
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The_Rings-PIA11483.jpgShadows on the Rings56 visite...EccoVi un altro esempio delle "gigantesche navi spaziali" che si muoverebbero attraverso gli Anelli di Saturno, secondo il Dr Bergrun...
In realtà è soltanto la lunga ombra della luna saturniana Tethys la quale, all'avvicinarsi dell'Equinozio, si stende sugli Anelli del Gigante Gassoso, dando l'impressione - ma solo ad un osservatore completamente disattento - della esistenza di un vascello scuro a forma di fuso che si muove attraverso gli Anelli "F" ed "A".
Caption NASA:"Joining other moons in heralding the coming of Saturn's August 2009 Equinox, the moon Tethys casts its shadow across Saturn's F-Ring and part of the A-Ring.
The penumbra, or outer non-opaque part of Tethys' shadow, has intersected the A-ring. Only around the time of Equinox are the shadows of the moons cast onto Saturn's Rings. For an animation of the moon Epimetheus casting a shadow on the A-Ring, see also PIA11651.
The image on the left was taken in Visible Light with the Cassini Spacecraft wide-angle camera on March 20, 2009. The image on the right was taken with the narrow-angle camera at nearly the same time. Tethys itself is not visible in these images, but the small moon Prometheus can be seen between the F and A-Rings in the top of the wide-angle camera image.
This view looks toward the unilluminated side of the Rings from about 37° above the Ring-Plane. The view was obtained from a distance of approx. 880.000 Km (about 547.000 miles) from Saturn and at a Sun-Saturn-Spacecraft, or Phase, Angle of 124°.
Image scale is roughly 49 Km (about 31 miles) per pixel in the wide-angle image. In the narrow-angle camera image, the scale is roughly 5 Km (a little more than 3 miles) per pixel".MareKromium
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The_Rings-PIA11489.jpgShadow on the Rings (Natural Colors; credits: Lunar Explorer Italia)56 visitenessun commentoMareKromium
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Tethys-PIA11495.jpgOdysseus and Penelope56 visiteCaption NASA:"Two large craters named after characters in Homer's Odyssey take the stage in this scene on Saturn's moon Tethys.
The crater on the right is the Odysseus Crater (approx. 450 Km, or about 280 miles across). The one on the left is Penelope, named after the wife of Odysseus.
This view looks toward the anti-Saturn side of Tethys (approx. 1062 Km, or about 660 miles across). North on Tethys is up and rotated 44° to the right.
The image was taken in Visible Light with the Cassini Spacecraft narrow-angle camera on April 12, 2009. The view was acquired at a distance of approx. 931.000 Km (about 578.000 miles) from Tethys and at a Sun-Tethys-Spacecraft, or Phase, Angle of 33°.
Image scale is roughly 6 Km (a little less than 4 miles) per pixel".MareKromium
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The_Rings-PIA11498.jpgShadow on the Rings (Natural Colors; credits: Lunar Explorer Italia)56 visiteCaption NASA:"The partial shadow of the moon Tethys demonstrates the variations in density across Saturn's Rings.
As the Cassini Spacecraft looks toward the unilluminated side of the Rings from about 37° above the Ring-Plane, part of Tethys' shadow is seen lying across the A-Ring and Cassini Division. The densest part of the A-Ring and the denser B-Ring let neither sunlight nor the darkness of Tethys' shadow pass through to the Spacecraft's camera, so the moon's shadow appears cut off. The B-Ring instead appears brightly lit here from Saturnshine. Tethys is not shown.
As Saturn approaches its August 2009 Equinox, the planet's moons cast shadows onto the Rings. (...)
The image was taken in Visible Light with the Cassini Spacecraft wide-angle camera on April 17, 2009. The view was obtained at a distance of approx. 1,3 MKM (about 808.000 miles) from Saturn and at a Phase Angle of 120°.
Image scale is roughly 75 Km (about 47 miles) per pixel".MareKromium
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Pandora-PIA11499.jpgPandora56 visiteCaption NASA:"The thin shadow of the moon Pandora cuts across Saturn's narrow F-Ring.
As Saturn approaches its August 2009 Equinox, the planet's moons cast shadows onto the Rings. Pandora (about 81 Km, or approx. 50 miles across) is on the left of the image. Other bright points of light in the image are background stars.
This view looks toward the unilluminated side of the Rings from about 55° above the Ring-Plane. The image was taken in Visible Light with the Cassini Spacecraft narrow-angle camera on April 16, 2009. The view was obtained at a distance of approx. 1,3 MKM (such as about 808.000 miles) from Saturn and at a Sun-Saturn-Spacecraft, or Phase, Angle of 98°.
Image scale is roughly 8 Km (about 5 miles) per pixel".MareKromium
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The_Rings-PIA11502.jpgEncke Ringlets56 visiteAlthough Saturn's moon Pan is absent from this image of the A-Ring's Encke Gap, the moon's handiwork is still displayed.
The two ringlets seen in the gap are maintained by the gravitational action of Pan (about 28 Km, or approx. 17 miles across). To learn more about this process, see also PIA07528.
The point of light near the bottom of the image is a star.
This view looks toward the unilluminated side of the Rings from about 41° above the Ring-Plane. The image was taken in Visible Light with the Cassini Spacecraft narrow-angle camera on April 17, 2009. The view was obtained at a distance of approx. 1,3 MKM (about 808.000 miles) from Saturn and at a Sun-Saturn-Spacecraft, or Phase, Angle of 115°.
Image scale is roughly 8 Km (about 5 miles) per pixel.MareKromium
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