| Risultati della ricerca nelle immagini - ""Wave-Makers"" |
Saturn_s Rings-PIA06237.jpgS/2005 S1: The "Wave-Maker" (1)58 visiteLa NASA conferma che le curiose ed enigmatiche "onde" le quali caratterizzano il margine esterno dell'Anello "A" di Saturno, proprio a ridosso della "Divisione Keeler" sono, con ogni probabilità, causate da una piccola luna del diametro di circa 7 Km, dotata di una discreta albedo (al pari delle particelle che formano il vicino Anello) e che è stata temporaneamente chiamata S/2005 S1.
Caption NASA originale:"Imaging scientists predicted the moon's presence and its orbital distance from Saturn after July 2004, when they saw a set of peculiar spiky and wispy features in the Keeler Gap's outer edge. The similarities of the Keeler Gap features to those noted in Saturn's F-Ring and the Encke Gap led the scientists to conclude that a small body, a few Km across, was lurking in the center of the Keeler Gap, awaiting discovery".
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Saturn_s Rings-PIA06239.jpgS/2005 S1: The "Wave-Maker" (2)57 visiteCaption NASA originale:"In the vicinity of the newly discovered little moon, the Keeler Gap's edges bear striking similarities to the scalloped edges of the 322 Km-wide (approx. 200-mile) Encke Gap, where the small moon Pan (25 Km, or approx. 16 miles across) resides.
From the size of the waves seen in the scalloped edges of the Encke Gap, imaging scientists were able to estimate the mass of Pan.
They expect to do the same, eventually, with S/2005 S1".
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