| Risultati della ricerca nelle immagini - "Epimetheus" |
Dione-N00028517.jpgDione, Epimetheus and the Rings53 visitenessun commento
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DioneandEpimetheus-PIA07525.jpgDione and Epimetheus53 visiteCaption NASA originale:"Cassini looks toward Saturn's night side in this view, capturing a glimpse of Dione's tortured surface in the foreground and a far-off view of Epimetheus, beyond Saturn. The spacecraft was just 1/10th of a degree above the ring-plane when this image was taken.
Parts of Dione's surface have been stretched and ripped apart by tectonic forces. Some of these faults are visible here, as is a large impact basin (not seen in NASA Voyager spacecraft images) near the moon's South Pole. Although this crater's diameter has not yet been measured by imaging scientists, it appears to be wider than 250 Km, which would make it the largest impact structure yet identified on this moon.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on May 5, 2005, at a distance of approx. 910.000 Km from Dione; 1,28 MKM from Epimetheus and 1,42 MKM from Saturn. The image scale is 5 Km per pixel on Dione and 9 Km per pixel on Epimetheus".
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Enceladus&C.-PIA08182.jpgMoons...53 visiteCaption NASA proginale:"Four of Saturn's many and varied moons crowd this single frame from Cassini.
All of the moons are illuminated by the Sun, which is out of the frame to the right. "Saturnshine", or reflected light from the planet (out of frame to the lower left), partly illuminates three of the moons, such as Tethys (1.071 Km, or 665 miles across, at upper right), Janus (181 Km, or 113 miles across, at lower left) and Epimetheus (116 Km, or 72 miles across, below and left of center).
Enceladus (505 Km, or 314 miles across) is much farther in the distance in this view, and shows merely a slim crescent below center.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on April 17, 2006, at a distance of approx. 3,7 MKM (such as about 2,3 MMs) from Saturn. The image scale is approx. 27 Km (about 17 miles) per pixel on Tethys, 21 Km (13 miles) per pixel on Enceladus, and 22 Km (14 miles) per pixel on Janus and Epimetheus".
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Epimetheus from Voyager 1.jpgEpimetheus from Voyager 159 visiteUn'altra "Luna Minore" di Saturno, dalla forma bizzarra.
Forse un'altra "preda" dell'abbraccio gravitazionale di Saturno?
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Epimetheus&Janus-N00043522.jpgJanus and Epimetheus (1)54 visiteN00043522.jpg was taken on November 29, 2005 and received on Earth November 29, 2005. The camera was pointing toward Epimetheus that, at the time, was approximately 1.095.193 Km away, and the image was taken using the CL1 and CL2 filters.
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Epimetheus&Janus-N00043535.jpgJanus and Epimetheus (2)54 visiteN00043535.jpg was taken on November 29, 2005 and received on Earth November 29, 2005. The camera was pointing toward Epimetheus that, at the time, was approximately 1.103.937 Km away, and the image was taken using the CL1 and CL2 filters.
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Epimetheus-EB-LXTT.jpgOne Name, but Many Faces: Epimetheus (an Image-Mosaic by Elisabetta Bonora - Lunexit Team)69 visitenessun commentoMareKromium
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Epimetheus-N00027140.jpgEpimetheus and the "F-Ring" of Saturn53 visiteUn'immagine della "roccia vagante" chiamata Epimetheus - che è comunque uno dei "Ring-Masters" - e le "imperfezioni" dell'"F-Ring" di Saturno, molto ben visibili in questo frame leggermente sovraesposto.
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Epimetheus-N00027756.jpgEpimetheus at the boundaries of the "Ringed Kingdom"54 visitenessun commento
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Epimetheus-N00028511.jpgEpimetheus53 visitenessun commento
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Epimetheus-N00028963.jpgEpimetheus and a 'string of ring'53 visiteUn piccolo calambour per celebrare questa immagine, certo non perfetta, ma comunque molto suggestiva, della shepherd-moon Epimetheus che brilla accanto alla porzione più esterna degli Anelli di Saturno, visti esattamente di profilo. Notate in particolare come i "nodi" degli Anelli (ossìa quelle loro irregolarità che alla NASA sono chiamate "clumps"--->lett. blocchi/gruppi) in frames come questo si possono vedere molto bene: guardate in alto, in prossimità della fine della 'striscia di luce'.
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Epimetheus-N00030849.jpgEpimetheus, from approx. 73.000 Km54 visiteE' inevitabile: una dopo l'altra, grazie alla permanenza della Sonda Cassini nel "ricco" Spazio di Saturno, tutte le lune del Gigante Anellato, prima o poi, vengono 'sfiorate' e riprese da angoli visuali sempre migliori. Anche la misteriosa e minuscola Epimetheus non è sfuggita a questa regola: siamo solo a 73.000 Km da questa piccolissima luna (uno spazio davvero risibile, nella logica delle distanze cosmiche) e, sebbene la qualità del frame non sia perfetta - notate gli innumerevoli artefatti fotografici che costellano l'immagine e che verranno "ripuliti" solo in un secondo momento - già possiamo farci un'idea pittosto precisa delle caratteristiche e, quindi, della storia di questo corpo celeste.
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