| Ultimi arrivi - Imagination |
The_Night_Before.jpgThe Night Before (by Roberto Tremolada)59 visitenessun commentoMareKromiumMag 10, 2009
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OrbitalDownload.jpgOrbital Download (by Roberto Tremolada)55 visitenessun commentoMareKromiumMag 10, 2009
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Orbital_Insertion.jpgOrbital Insertion (by Roberto Tremolada)58 visitenessun commentoMareKromiumMag 10, 2009
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LowOrbit.jpgLow orbit (by Roberto Tremolada)55 visitenessun commentoMareKromiumMag 10, 2009
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Titan-PIA11838.jpgRainy Day at Hotei Arcus62 visiteA short but fierce "gullywasher" rainstorm of Methane falls on the mountains surrounding the intriguing flows of Titan's Hotei Arcus in this artist's concept, based upon radar mapping data from the Cassini Spacecraft in orbit around Saturn.
Radar data show that the arc of Hotei is the boundary between rugged mountains to the South and East and a broad valley. Emerging from the mountains are several radar-bright channels that are likely now dry riverbeds that were carved by flowing Methane due to rainfall. Within the valley, the channels end near lobate (blobby) flows some 100 to 200 meters (300 to 600 feet) thick, which some scientists think could be slushy ice lava from cryovolcanoes.
These flows are portrayed here as the rough and elevated lighter tan areas in the foreground. It is possible that such phenomena could release Methane from beneath the surface, helping to explain how Titan's Atmosphere sustains its supply of Methane.
The area depicted is located at approximately 28° South Latitude and 78° West Longitude.MareKromiumMar 25, 2009
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Huygens-Down-10.jpgHuygens' Descent to Titan: the Shoreline - 20 Km from the Surface (credits: R. Pascal)57 visitenessun commentoMareKromiumDic 17, 2008
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Huygens-Down-05.jpgHuygens' Descent to Titan: 70 Km from the Surface (credits: R. Pascal)56 visiteAt an altitude of about 70 Km above the Surface, Huygens is inside the layer of complex organic condensate haze. Below that layer, the view becomes clearer. MareKromiumDic 17, 2008
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Huygens-Down-06.jpgHuygens' Descent to Titan: 40 Km from the Surface (credits: R. Pascal)65 visiteThis view represents the Adiri Region, as seen from an altitude of about 40 Km, but with the Sun in the West.MareKromiumDic 17, 2008
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Huygens-Down-07.jpgHuygens' Descent to Titan: 30 Km from the Surface (credits: R. Pascal)56 visiteHuygens at an altitude of about 30 Km above the surface of Titan. MareKromiumDic 17, 2008
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Huygens-Down-08.jpgHuygens' Descent to Titan: 25 Km from the Surface (credits: R. Pascal)67 visiteThe altitude, where Huygens' view of the Surface became distinctly clearer, was surprisingly low with respect to the atmosphere model.
Only about 10% of the Sunlight that is present at the Outer Atmosphere of Titan reaches the surface at the end.
Nota Lunexit: ed è proprio per il suddetto motivo che questa (comunque bellissima) sequenza di immagini è, a nostro parere, completamente errata dal punto di vista della luminosità dell'ambiente.MareKromiumDic 17, 2008
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Huygens-Down-09.jpgHuygens' Descent to Titan: 20 Km from the Surface (credits: R. Pascal)56 visiteA closeup view of Huygens at an altitude of about 20 Km. MareKromiumDic 17, 2008
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Huygens-Down-00.jpgHuygens' Descent to Titan: 115 Km from the Surface (credits: R. Pascal)57 visiteThe Huygens Probe just jettisoned its Main-parachute and is now hanging under the smaller Stabiliser-parachute. This Stabiliser-parachute will carry Huygens for the next two hours all the way down to the Surface of Titan. MareKromiumDic 17, 2008
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