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Saturn and Mimas-PIA06473.jpgSaturn and Mimas63 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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M-028-1.jpgM 28 - Globular Star Cluster63 visite"...Cato dixit litterarum radices amares esse, fructus iucundiores..."
(Catone)
"...Catone disse che le radici della conoscenza sono (sovente) amare, ma dolcissimi ne sono i suoi frutti..."
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OPP-SOL255-1N150824929EFF36C3P1990R0M1.jpgTracks in the "mud"63 visiteUn'immagine che ci aiuta a vedere (di più e meglio del solito) che le sabbie che si trovano all'interno di Endurance Crater non sono esattamente "sabbie desertiche". Le tracce lasciate dal Rover e che in questo frame si vedono così bene sembrano disegnate sul fango o, comunque, su un terriccio assolutamente morbido e dalle caratteristiche diverse ed incoerenti rispetto a quanto potremmo e dovremmo attenderci se i dati NASA relativi alle temperature superficiali del Pianeta Rosso fossero davvero corretti. Che dire? Nulla. Non possiamo fare altro che continuare ad osservare, registrare ed attendere; prima o poi i silenzi e le bugie (dalle gambe sempre più corte...) finiranno.
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OPP-SOL274-1N152511307EFF37IFP0664R0M1.jpgPaving on the walls of Endurance Crater (1) - Sol 27463 visiteAncora un'immagine, relativa al Sol 274, dei "pavimenti Marziani" che sono ben visibili nell'area (ed all'interno) di Endurance Crater. Si tratta di due frames ad elevata definizione che ci consentono (il secondo in particolare) di fruire di una visione ravvicinata e stupendamente limpida di questa "Meraviglia" le cui origini, nonostante gli sforzi (anche di immaginazione) da parte di Scienziati e Ricercatori, sono ancora ben lungi dall'essere scoperte.
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M-098-1.jpgM 98 - Spiral Galaxy63 visite"...Omnes Natura parit liberos,
Et omnes libertati natura student..."
(Plauto)
"...La Natura (ci) genera tutti liberi, e tutti - per natura - cercano la libertà..."
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Sun filaments.jpgSun filaments63 visiteCaption NASA originale, da NASA Picture of the Day del 6 Dicembre 2004:"Two unusually long filaments crossed part of the Sun last week. The filaments are actually relatively cool and dark prominences of solar plasma held up by the Sun's magnetic field but seen against the face of the Sun. Filaments typically last a few weeks before falling back. Pictured above, the two filaments are visible on the Sun's right side. It would take twenty Earths, set end-to-end, to match the length of one of the filaments. Also visible are bright hot regions called plages and a carpet of hundreds of granules that provide the Sun's texture. The above image was taken early last week through a small telescope in a very specific color of light emitted primarily by hydrogen".
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EROS-PIA02907_modest.jpgA strange drawing made by lights and shadows...63 visiteEros' irregular shape creates interesting and beautiful scenes where the Sun shines obliquely on the surface. In the absence of an atmosphere, and hence no secondary illumination reflecting from atmospheric molecules, shade appears nearly as black as space. This image, taken from the NEAR Shoemaker spacecraft on May 2, 2000, from an orbital altitude of 50 kilometers (31 miles), shows one of the more telling and yet comical combinations of light and shadow. The entire scene is about 1.8 kilometers (1.1 miles) across. High spots near the edges of shadows, like the 35-meter (115-foot) diameter boulder just below the center of the frame, seem almost to "float" above the surface. With a little imagination, the shadow dominating the right side of the frame could be seen as a small, long-eared terrier bending over to sniff his dinner!
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OPP-SOL324-1F156948133EFF4072P1202L0M1.jpgIn front of the Heat-Shield - Sol 32463 visitenessun commento
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M-081-3.jpgM 81 and M 82 - Spiral Galaxies (full field)63 visite"...How does it feel,
How does it feel,
To be on your own,
With no directions home,
Like a complete unknown,
Like a rolling stone..."
Bob Dylan - "Like a rolling stone"
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Titan-Huygens_Landing_Site-11-PIA07229_modest.jpgHuygens' descent map (3) 63 visiteThe octagons indicate anticipated fields of view of panoramic mosaics of images taken by Huygens' descent imager and spectral radiometer instrument as the probe reaches certain altitudes during its descent. This map shows the footprints for mosaics to be assembled from 36 individual images at each altitude, with the field of view cut off at 75° from straight down although the actual images will extend all the way to the hazy horizon. Each mosaic made this way will be about 1.300 by 1.300 pixels. The largest octagon (in red) is about 1.120 Km across and represents the field of view for the mosaic of images taken at an altitude of 150 Km. From that height, individual pixels in the center of the image will be about 150 mts across, though haze between the ground and the camera at that height will likely degrade the resolution in those images. The location of the anticipated landing site is based on modeling of Titan's winds, and the actual landing site will be different if the actual winds experienced by Huygens during descent differ from this model.
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Comets-Wild_2-01.jpgApproaching Wild 2 (2)63 visiteCaption NASA originale:"On January 2, 2004 NASA's Stardust spacecraft made a close flyby of comet Wild 2.
Among the equipment the spacecraft carried on board was a navigation camera.
This is the 34th of the 72 images taken by Stardust's navigation camera during close encounter. The exposure time was just 10 milliseconds".
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OPP-SOL358-1P159971557EFF40FWP2372R1M1.jpg"Side-Winders" from Sol 358 (2)63 visiteProsieguo della panoramica delle "Side-Winders"; per questo frame è stato utilizzato il "Filtro 1".
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