Saturn: the "Ringed Beauty" and His Moons
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Saturn-W00052086.jpgUnusual Saturn Image54 visiteSapreste spiegare, in un massimo di tre righe, il contenuto visivo di questo frame?... Provateci, se volete, utilizzando la funzione "commenti"!MareKromium
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Saturn-W00061084.jpgWhat a Shadow!54 visiteUn'ombra davvero imponente (che evidenzia - molto bene! - anche le "penumbral areas") è disegnata sul disco illuminato di Saturno.
Le Original Captions NASA non ci sono di aiuto, anzi: confondono le idee (come leggerete)!
Dunque rivolgiamo il quesito a Voi: di quale Luna Saturniana è l'ombra che vediamo in questo frame?
Buon Lavoro!
W00061084.jpg was taken on November 07, 2009 and received on Earth November 08, 2009. The camera was pointing toward SATURN that, at the time, was approx. 2.059.699 Km away; the image was taken using the CB2 and CL2 filters. This image has not been validated or calibrated. A validated/calibrated image will be archived with the NASA Planetary Data System in 2010.MareKromium
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Saturn-W00064795-5-6-EB-LXTT.jpgFather and Son n. 2 (An Image-Mosaic in Natural Colors; credits for the additional process. and color.: Elisabetta Bonora - Lunexit Team)89 visitenessun commentoMareKromium
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Saturn-W00064807-6-9-EB-LXTT.jpgFather and Son n. 1 (An Image-Mosaic in Natural Colors; credits for the additional process. and color.: Elisabetta Bonora - Lunexit Team)56 visitenessun commentoMareKromium
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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)168 visitenessun commentoMareKromium
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Saturn-dragonstorm_cassini_full.jpgSaturn "dragon-storm" (false colors/near infrared)70 visiteDa "NASA - Picture of the Day" del 25 Febbraio 2005:"Dubbed the "Dragon Storm", convoluted, swirling cloud features are tinted orange in this false-color, near-infrared image of Saturn's Southern Hemisphere. In one of a series of discoveries announced by Cassini researchers, the Dragon Storm was found to be responsible for mysterious bursts of radio static monitored by Cassini instruments during the last year as the spacecraft orbited the ringed planet. The storm is now thought to be a giant Saturnian thunderstorm, like storms on Earth, with radio noise produced in high-voltage lightning discharges. The Cassini observations are also consistent with the Dragon Storm being a long-lived storm, deep within the gas giant's atmosphere, that periodically flares-up to produce large, visible storm regions".
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Saturn-the Encke Gap-PIA06534_modest.jpgThe "Encke Gap" of Saturn's Rings55 visiteCaption NASA originale:"An intriguing knotted ringlet within the Encke Gap is the main attraction in this Cassini image. The Encke Gap is a small division near the outer edge of Saturn's rings that is about 300 Km wide. The tiny moon Pan (20 Km across) orbits within the gap and maintains it.
Many waves produced by orbiting moons are also visible.
The image was taken in visible light with the Cassini spacecraft narrow angle camera on Oct. 29, 2004, at a distance of about 807,000 Km from Saturn. The image scale is 4,5 Km per pixel".
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Saturn-tilted.jpgTilted Saturn55 visiteCaption NASA originale:"Saturn's whirling vortices and feathery cloud bands are the signs of a restless world. Cassini captured this arresting view of the giant planet scored by bold shadows cast by the rings. The rings are seen edge-on in this dramatic, artfully tilted scene.
The image was taken with the Cassini spacecraft wide-angle camera on March 6, 2005, at a distance of approx. 1,7 MKM (1 MMs) from Saturn through a filter sensitive to wavelengths of infrared light centered at 750 nnmts. The image scale is 10 Km per pixel".
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Saturn.jpgSaturn in real colors54 visitenessun commento
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Saturn.jpgThe Lord of the Rings96 visiteCaption NASA, da "NASA - Picture of the Day" del giorno 4 Marzo 2009:"Very good telescopic views of Saturn can be expected in the coming days as the Ringed Planet nears "Opposition" on March 8th, its closest approach to Earth in 2009.
Of course, "Opposition" means opposite the Sun in planet Earth's sky - an arrangement that occurs almost yearly for Saturn. But while Saturn itself grows larger in telescopic images, Saturn's Rings seem to be vanishing as their tilt to our line-of-sight decreases.
In fact, the rings will be nearly invisible, edge-on from our perspective, by September 4, 2009.
Recorded on February 28, this sharp image was made with the 1 meter telescope at Pic Du Midi, a mountain top observatory in the French Pyrenees. The Rings are seen to be tilted nearly edge-on, but remarkable details are visible in the gas giant's cloud bands. The icy moon Tethys appears just beyond the Rings at the lower left".MareKromium
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SaturnDustRing-SST.jpgDust-Ring around Saturn54 visiteWhat has created a large Dust-Ring around Saturn?
At over 200 times the radius of Saturn and over 50 times the radius of Saturn's expansive "E"-Ring, the newly discovered Dust-Ring is the largest planetary ring yet imaged. The Ring was found in IR Light by the Earth-orbiting Spitzer Space Telescope.
A leading hypothesis for its origin is impact material ejected from Saturn's moon Phoebe, which orbits right through the Dust-Ring's middle.
An additional possibility is that the Dust-Ring supplies the mysterious material that coats part of Saturn's moon Japetus, which orbits near the Dust-Ring's Inner Edge. Pictured above in the inset, part of the Dust-Ring appears as false-color orange in front of numerous background stars.MareKromium
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SaturnSpace-N00115343-N00115349.gifThrough the "Eyes" of Cassini... (GIF-Movie; credits: Dr G. Barca)54 visiteSuggestivo, affascinante e, alla fine - semplicemente -, bello!MareKromium
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