| Ultimi arrivi - The Moon After Apollo 17 |
Apollo 11 Landing Site-00.jpgThe Apollo 11 Landing Site (1)158 visitenessun commentoMar 06, 2006
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The Moon in colors.jpgThe "Colors" of the Moon96 visiteDa "NASA - Picture of the Day" del 16 Febbraio 2006:"Earth's Moon is normally seen in subtle shades of grey or yellow. In this view small color differences have been greatly exaggerated to make this dramatic mosaic image of the Moon's gibbous phase. The familiar Sea of Tranquillity (Mare Tranquillitatis) is the blue area right of center. White lines radiate from the crater Tycho at bottom left, while purplish tones mottle the crater Copernicus left of center.
Though exaggerated, the different colors are recognized to correspond to real differences in the chemical makeup of the lunar surface - blue hues reveal Titanium rich areas while orange and purple colors show regions relatively poor in Titanium and Iron. Calibrated by rock samples from the Apollo missions, similar multicolor images from spacecraft have been used to explore the Moon's global surface composition". Feb 16, 2006
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PlatoCrater-06.jpgPlato Crater (2)72 visitenessun commentoFeb 11, 2006
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PlatoCrater-00.jpgPlato Crater (1)93 visiteThe dark-floored, 95 Km wide crater Plato (top) and Sunlit Peaks of the Lunar Alps are highlighted in this sharp digital mosaic of the Moon's surface. While the Alps of planet Earth were uplifted over millions of years as continental plates slowly collided, the Lunar Alps were likely formed by a sudden collision that created the giant impact basin known as the Mare Imbrium (Sea of Rains). The mare's generally smooth, lava-flooded floor is seen extending to the left. The prominent straight feature cutting through the mountain range (lower right) is the lunar Alpine Valley, about 160 Km long and up to 10 Km wide. Of course, the large, bright alpine mountain near bottom center is named Mont Blanc and reaches over 3 Km above the Lunar Surface.Feb 11, 2006
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South Pole - 01.jpgUnusual features and shadows near the South Pole (2)85 visitenessun commentoFeb 04, 2006
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South Pole - 00.jpgUnusual features and shadows near the South Pole (1)83 visitenessun commentoFeb 04, 2006
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Albategnius-2.jpgAlbategnius Crater (2)125 visiteAlbategnius (Al-Battani, Muhammad ibn Jabir) (approx. 850-929)
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An Iraqi prince, born in Batan, Mesopotamia (Iraq), who was the leading Astronomer and Mathematician of his time. He drew up improved tables of the Sun and Moon, measured the eccentricity of Earth’s orbit and the inclination of Earth’s Equator to its orbital plane. He was capable of making an extremely accurate measurement of the length of the Earth year - which was also used in the Gregorian reform of the Julian Calendar. His observations at Rakku, made over (probably) a 40-year period, were summarized in his work "Movements of the Stars" (first published in Europe in 1537).
Thanks to his contribution, Johannes Hevelius (1611-1687) was able to theorize and discover the secular variation in the Moon’s motion.Feb 03, 2006
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Albategnius-1.jpgAlbategnius Crater (1)137 visiteAlabategnius: un grande cratere del diametro di circa 120 km e con pareti (o murate) che arrivano sino a 4000 mt. Le sue coordinate sono: Lat. 12° Sud e Long. 4° Est. La sua posizione è nella Regione Centrale della Luna, una Regione caratterizzata (in buona misura) da grandi bacini d'impatto.
Albateignus non è difficile da localizzare - leggermente ad Est del Cratere Ptolemaeus.Feb 03, 2006
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Mare Imbrium.jpgA "Castle of Shadows" in Mare Imbrium109 visitenessun commentoFeb 03, 2006
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Triesnecker-02.jpgTriesnecker (3) - detail mgnf69 visitenessun commentoGen 30, 2006
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Triesnecker-01.jpgTriesnecker (2)69 visitenessun commentoGen 30, 2006
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Triesnecker-00.jpgTriesnecker (1)63 visitenessun commentoGen 30, 2006
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