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Saturn & family-PIA06475_modest.jpgSaturn and Family56 visiteCaption NASA originale:"Satellites visible in this image are (clockwise from upper left): Dione (1.118 Km or 695 miles wide), Enceladus (499 Km or 310 miles wide), Tethys (1.060 Km or 659 miles wide), Mimas (398 Km or 247 miles wide) and Rhea (1.528 Km or 949 miles wide).
The image was taken in visible red light on Aug. 1, 2004, at a distance of 7.8 MKm (4.8 million miles) from Saturn. The image scale is 464 Km (288 miles) per pixel".
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Saturn + 1-N00019307.jpgSaturn and one little Moon N 0001930756 visiteVi proponiamo due immagini da guarddare in stretta correlazione. In questo primo frame, Saturno è accompagnato da una delle sue tante Lune. Non sapremmo dire di quale si tratti, ma questo non è un dato - in questa sede - di importanza fondamentale. EccoVi il commento NASA al frame:"N00019307.jpg was taken on September 24, 2004 and received on Earth September 25, 2004. The camera was pointing toward SATURN at approximately 7.752.936 Km away and the image was taken using the BL1 and CL2 filters".
Accanto alla Luna di Saturno si può intuire - espandendo il frame sino a full-size - una leggera ombratura chiara. Noi abbiamo pensato che fosse un difetto dell'immagine. Ma ora andate a guardare il frame successivo...
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Saturn + 4 Moons-PIA05435_modest.jpgSaturn and 4 Moons from 8.900.000 Km73 visitecaption NASA originale:"Saturn's Moons visible in this image are (clockwise from upper left): Tethys (1060 Km wide); Dione (1118 Km wide); Enceladus (499 Km wide) and Mimas (398 Km wide).
The image was taken in visible red light at a distance of 8,9 MKM (5.5 million miles) from Saturn".
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Saturn and 2 Companions-N00015014.jpgSaturn and some Companion from about 9.000.000 Km67 visitenessun commento
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Saturn and Enceladus - PIA06483_modest.jpgSaturn and Enceladus (in ultra-violet)56 visiteCaption NASA originale:"Looking beyond Saturn's south pole, this was the Cassini spacecraft's view of the distant, icy moon, Enceladus on July 28, 2004. The planet itself shows few obvious features at these ultraviolet wavelengths, due to scattering of light by molecules of the gases high in the atmosphere. Enceladus is 499 Km wide.
The image was taken with the Cassini spacecraft narrow angle camera at a distance of 7.4 MKM from Saturn through a filter sensitive to ultraviolet wavelengths of light. The image scale is 44 Km per pixel of Saturn".
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Saturn and Mimas-PIA06473.jpgSaturn and Mimas57 visiteCaption NASA originale:"On its first orbit of the ringed planet, the Cassini spacecraft gazed into the distance to capture this image of the icy moon Mimas (398 Km - 247 miles wide). The faint F-Ring is visible as the outermost strand of the rings in this view. The image was taken in visible light with the narrow angle camera on August 16, 2004, at a distance of 8.9 MKm (5.5 MMs) from Saturn. The image scale is 53 kilometers (33 miles) per pixel. Contrast was slightly enhanced to aid visibility".
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Saturn and Prometheus-PIA06481_modest.jpgSaturn and Prometheus56 visiteCaption NASA originale:"Saturn's moon Prometheus is seen shepherding the inner edge of Saturn's "F-Ring". Prometheus is 102 Km across and was captured in a close-up view by the Cassini spacecraft near the time of orbital insertion at Saturn (see PIA06098). A number of clumps are visible here along the arcing "F-Ring".
The image was taken with the Cassini spacecraft narrow angle camera on Aug. 5, 2004, at a distance of 8.2 MKM from Saturn through a filter sensitive to visible green light. The image scale is 49 Km per pixel. Contrast was slightly enhanced to aid visibility".
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Saturn from 8.200.000 Km.jpgSaturn, Prometheus, Pandora and Janus from 8.200.000 Km55 visitenessun commento
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Saturn from 8.500.000 Km.jpgSaturn, Mimas and Enceladus from 8.500.000 Km56 visitenessun commento
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Saturn from 8.800.000 Km.jpgSaturn and Mimas from 8.800.000 Km55 visitenessun commento
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Saturn in the darkness-N00015836.jpgSaturn (and Titan?) in the darkness58 visiteA volte, quando invitiamo i nostri Lettori ad immaginare, mentre guardano le "istantanee dell'Universo", di "essere lì", sospesi in una sorta di abisso senza confini visibili, circondati da oggetti maestosi ed impenetrabili, pensiamo al film "2001 - Odissea nello Spazio", quando Dave Bowman esce nello Spazio di Giove a bordo della sua navetta, per andare a vedere il Monolito da vicino. Questo frame, in qualche modo, ci ricorda quella sequenza e noi ve lo proponiamo...
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Saturn-N00014879.jpgSaturn - N00014879 (A Satellite or something else? - 1)55 visiteQuesto frame ed il successivo sono simili a tantissimi altri ripresi dalla Sonda Cassini-Huygens. Non sono particolarmente belli o interessanti, ma abbiamo deciso di proporli ugualmente perchè mostrano un evento che, laddove non spiegato, è idoneo ad ingenerare malintesi. Come potete vedere c'è una luce vicino (relativamente, ovvio...) al Polo Sud di Saturno, leggermente in basso. Nel frame successivo, la stessa luce (la stessa?) si è decisamente spostata. Noi pensiamo che si tratti di uno dei tantissimi...
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