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South_Polar_Features-Swiss_Cheese_Terrain-02.jpgSummertime at the South Pole (2)56 visitenessun commento
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NGC-0055-PIA04923.jpgNGC 55 - Spiral Galaxy56 visite"...Credo che il giusto è un istrion beffardo,
E nel viso e nel cuor,
Che tutto è in lui bugiardo:
Lagrima, bacio, sguardo,
Sacrificio ed onor..."
Arrigo Boito - "Otello"
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SOL820-2P199157325EFFAR00P2409L2M1.jpgCracks (1) - Sol 82056 visitenessun commento
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SOL820-2P199157388EFFAR00P2409L7M1.jpgCracks (2) - Sol 82056 visitenessun commento
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SOL820-2P199157465EFFAR00P2409L2M1.jpgRover Tracks - Sol 82056 visitenessun commento
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SOL813-PIA08423-6.jpgWhen the Sun goes down... (6) - Sol 81356 visitenessun commento
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Janus and Epimetheus-PIA08170.jpgJanus, Epimetheus and the "Orbital Switch"56 visiteCaption NASA originale:"In their orbital ballet, Janus and Epimetheus swap positions every four years - one moon moving closer to Saturn, the other moving farther away. The two recently changed positions (the swap occurring on January 21, 2006), and Janus will remain the innermost of the pair until 2010, when they will switch positions again.
Although the moons appear to be close in the image, they are not. Janus is about 40.000 Km (appx. 25.000 miles) farther away from Cassini than Epimetheus (at left) in this view. In fact, even when they are at their closest, tugging at each other and swapping orbital positions, they are never closer than about 15.000 Km (about 9.000 miles).
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on March 20, 2006 at a distance of approx. 452.000 Km(about 281.000 miles) from Epimetheus and 492.000 Km (about 306,000 miles) from Janus. The image scale is about 3 Km (appx. 2 miles) per pixel on both moons".
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RCW 36-1.jpgThe H II Region RCW 3656 visite"...Optimum est pati quod emendare non possis..."
(Seneca)
"...E' ottima cosa (l'essere capaci di) sopportare ciò a cui non può porsi rimedio..."
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RCW 49-1.jpgThe H II Region RCW 49 (Gum 29)56 visite"...Pericla, timidus, etiam quae non sunt, videt..."
(P. Siro)
"...Il codardo vede pericoli anche laddove non ve ne sono..."
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Titan-Dunes-IMG002116-br500.jpgThe Dunes of Titan and the Namibian Dunes56 visiteCassini radar sees sand dunes on Saturn's giant moon Titan (upper photo) that are sculpted like Namibian sand dunes on Earth (lower photo). The bright features in the upper radar photo are not clouds but topographic features among the dunes.
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OPP-SOL804-Vic_pan_pair_labeled-A810R1_br.jpgThe rim of Victoria Crater (3)56 visitenessun commento
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Titan-Atmosphere.jpgAtmospheres...56 visitenessun commento
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