Saturn: the "Ringed Beauty" and His Moons
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Dione_and_Enceladus-N00119781-N00119798.gifRush! (GIF-Movie; credits: Elisabetta Bonora)63 visitenessun commentoMareKromium
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Dione_and_Mimas-PIA14619-PCF-LXTT-IPF-1.jpgSo close, and yet so far... (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)75 visiteThe Saturnian moon Mimas peeps out from behind the larger moon Dione in this suggestive view of a so-called "Mutual Event" as it was seen from and recorded by the NASA - Cassini Spacecraft. Mimas (which is approx. 246 miles - such as a little less than 396 Km - across) is near the bottom center of the image. This view looks toward the anti-Saturn side of Dione (which is about 698 miles - such as approx 1123,3 Km - across). North on Dione is up and rotated 20° to the right.
The image was taken in Visible Light with the NASA - Cassini Spacecraft Narrow-Angle Camera on December 12, 2011, at a distance of approximately 377.000 miles (such as about 606.721 Km) from Mimas and approximately 56.000 miles (such as a little more than 90.000 Km) from Dione, at a Sun-Dione-Cassini Spacecraft , or Phase, Angle of 42°. Image scale is 1773 feet (such as about 540,41 meters) per pixel on Dione.
This frame (which is a crop from an Original NASA - Cassini Spacecraft b/w image published on the NASA - Planetary Photojournal with the ID n. PIA 14619) has been additionally processed and then colorized in Absolute Natural Colors (such as the colors that a human eye would actually perceive if someone were onboard the NASA - Cassini Spacecraft and then looked outside, towards the Saturnian moons Dione and Mimas), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team. Different colors, as well as different shades of the same color, mean, among others, the existence of different Elements present on the Surface of Dione and Mimas, each having a different Albedo (---> Reflectivity) and Chemical Composition.MareKromium
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Dione_and_Tethys-EB-LXTT.gifCosmic Clockwork (GIF-Movie; credits: Elisabetta Bonora - Lunexit Team)54 visitenessun commentoMareKromium
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Dione_and_Tethys-MF-LXTT.jpgNightlights in the Sky of Saturn (Natural Colors; credits for the additonal process. and color.: Dr Marco Faccin - Lunexit Team)85 visitenessun commentoMareKromium
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Dione_and_Titan-EL.jpgFading in the Background... (credits: NASA/JPL/SSI; Color composite: Emily Lakdawalla)55 visiteEmily Lakdawalla è sicuramente bravissima, ma la nostra Elisabetta Bonora è meglio: nessuno ne dubita. Eppure, per l'ennesima volta, la prestigiosa Rubrica NASA "Astronomy, Picture of the Day", pubblica un lavoro che è stato palesemente scopiazzato dalle nostre pagine.
Non ci credete? Beh, questo non è un nostro problema. Andate a vedere la "Picture of the Day" del 20 Aprile 2010 e poi guardate l'immagine pubblicata da noi il giorno 12 Aprile 2010.
E se Vi va, alla fine provate a fare "2 + 2". E per quanti sforzi possiate inventarVi per dimostrare il contrario, credeteci, la somma sarà SEMPRE "4"...MareKromium
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Dione_and_Titan-NOO152440-86-EB.gifDione, Titan and some "Mistery Moons"... (GIF-Movie - Natural Colors; credits: ELisabetta Bonora - Lunexit Team)58 visite...Il filmato è, semplicemente, di straordinaria fattura (un "Grazie di Cuore!" alla nostra Amica e Partner, Elisabetta Bonora), ed i suoi contenuti, come qualsiasi Appassionato di Astronomia potrà notare, sono - ancora una volta - estremamente suggestivi.
Titano, dal punto di vista dell'Orbiter Cassini, "scivola" accanto a Dione.
Ma sono soltanto Dione e Titano i "Protagonisti" di questo "inseguimento" nella Notte di Saturno?
Ebbene, se avete presente e chiaro il concetto di "Risonanza Orbitale" e se osservate MOLTO attentamente il filmato, alla risposta potreste e dovreste arrivare da soli...MareKromium
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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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Earth-N00061732-c.jpgEarth and Moon...maybe? (1)57 visiteLa nostra impressione è che, in questo frame (apparentemente del tutto insignificante) ci sia una ripresa - molto suggestiva - della nostra Terra (e della Luna).
Ci sbagliamo? Forse no. La NASA, purtroppo, non ci è di aiuto e questa è la caption che riserva al frame:"N00061732.jpg was taken on May 22, 2006 and received on Earth on the same date. The camera was pointing toward Saturn that, at the time, was approximately 384.937 Km away.
The image was taken using the BL1 and CL2 filters".
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Earth-N00061732-detmgnf.jpgEarth and Moon...maybe? (2)55 visitedettaglio del frame precedente
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Earth-PIA08324-1.jpgEarth, from Saturn's Space (1)81 visiteCaption NASA originale:"Not since NASA's Voyager 1 spacecraft saw our home as a pale blue dot from beyond the orbit of Neptune has Earth been imaged in color from the Outer Solar System. Now, Cassini casts powerful eyes on our home Planet, and captures Earth, a pale blue orb - and a faint suggestion of our Moon - among the glories of the Saturn System.
Earth is captured here in a natural color portrait made possible by the passing of Saturn directly in front of the Sun from Cassini's point of view. At the distance of Saturn's orbit, Earth is too narrowly separated from the Sun for the spacecraft to safely point its cameras and other instruments toward its birthplace without protection from the Sun's glare.
The Earth-and-Moon System is visible as a bright blue point on the right side of the image above center. Here, Cassini is looking down on the Atlantic Ocean and the Western Coast of North Africa. The phase angle of Earth, seen from Cassini is about 30°".
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Earth-PIA08324-2.jpgEarth, from Saturn's Space (2)55 visiteThis magnified view of the image taken through the clear filter (monochrome) shows the Moon as a dim protrusion to the upper left of Earth. Seen from the Outer Solar System through Cassini's cameras, the entire expanse of direct human experience, so far, is nothing more than a few pixels across. Earth no longer holds the distinction of being our Solar System's only "water world", as several other bodies suggest the possibility that they too harbor liquid water beneath their surfaces. The Saturnian moon, Enceladus, is among them, and is also captured on the left in this image, with its plume of water ice particles and swathed in the blue E-Ring which it creates. Delicate fingers of material extend from the active moon into the E-Ring. The narrow and tenuous G-Ring and the Main Rings are seen at the right. The view looks down from about 15° above the un-illuminated side of the Rings.
Images taken using red, green and blue spectral filters were combined to create this view. The image was taken by the Cassini spacecraft wide-angle camera on Sept. 15, 2006, at a distance of approx. 2,1 MKM (about 1,3 MMs) from Saturn and at a sun-Saturn-spacecraft angle of almost 179°.
Image scale is roughly 129 Km (about 80 miles) per pixel.
At this time, Cassini was nearly 1,5 BKM (about 930 MMs) from Earth.
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Eclipse-N00136236.gifEclipse... (GIF-Movie; credits: Dr G. Barca)54 visiteUno spettacolare GIF-Movie realizzato dal nostro (sempre più bravo) Dr Barca il quale ci mostra una stupenda eclissi mentre si materializza davanti agli "occhi elettronici" dell'Orbiter CASSINI.
Un "commento"? Ecco lo Spazio: l'Ultima Frontiera. La VERA e l'UNICA Ultima Frontiera.MareKromium
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