| Piú votate - The Moon After Apollo 17 |
![The Moon from CLEM-clm_usgs_18[1].jpg](albums/userpics/10008/small_The%20Moon%20from%20CLEM-clm_usgs_18%5B1%5D.jpg "Nome del file=The Moon from CLEM-clm_usgs_18[1].jpg
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Aggiunta il=Gen 28, 2005")
The Moon from CLEM-clm_usgs_18[1].jpgSchrodinger Impact Basin from Clementine145 visiteCaption NASA originale:"Clementine mosaic of the Schrodinger impact basin near the south pole of the Moon. The basin is 312 Km in diameter and centered at 67° S, 132° E. Note the smooth floor and the large inner ring. The dark area around the small crater just left of the center of the basin was probably caused by relatively recent volcanic ejecta. The South Pole is just off the upper left corner of the image (Clementine, USGS slide 18)".
(5 voti)
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The Moon from Cassini-Huygens.jpgThe Moon from Cassini-Huygens - Lunar fly-by of Aug., 18, 199999 visiteUna serie di tre fotogrammi montati in sequenza e relativi al passaggio ravvicinato ("fly-by") della Sonda Cassini-Huygens accanto alla Luna. Era il 18 Agosto 1999. Ed eccoVi la "original caption" relativa a questo evento, dal "NASA Picture of the Day" del 10 Settembre 1999: "...the Cassini spacecraft flew by the Earth and Moon, then continued on its way to the outer solar system. Near its closest approach to the Moon, a distance of about 377.000 Km, controllers tested Cassini's imaging systems on this most familiar celestial body. This composite picture shows three resulting lunar images from the green, blue, and ultraviolet regions of the spectrum (left to right). Prominant in the upper right of each image is the dark, round Mare Crisium (Sea of Crises) at the eastern edge of the Moon's near side. With its cameras clearly functioning well, Cassini's (...) expected to arrive at its final destination, the Saturnian system, in 2004".
La storia, come sapete, ha avuto un lieto finale.
(5 voti)
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ZA-Moon from Clementine.jpgThe whole Moon from Clementine199 visiteVeduta globale della Luna (ottenuta con la tecnica del "fotomosaico"), così come ripresa dalla Sonda Clementine, usando la fotocamera ad infrarossi.
Un'immagine interessante e, comunque, utile proprio in quanto globale e panoramica.
(5 voti)
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ZZ-ZZ-U-March-2013-lunar-impact-as-seen-from-Earth_NASAS-Scientific-Viz-Studio.jpgImpact or Volcanic Residual Activity?188 visiteFor a while now, astronomers with their telescopes pointed at the Moon have noticed short flashes of light, multiple times a week on the Moon's surface. The flashes seemed to begin, light up a part of the moon's landscape and die off in a matter of seconds. Other times, it's the exact opposite: the surface grows darker in a small region than the rest of the Moon very briefly.
Oddly, this phenomena has been observed on-and-off by astronomers for over 60 years, but without an explanation for it. A team of researchers from the Julius-Maximilians-Universitat Wurzburg (JMU) in Bavaria, Germany decided they've had enough of the mystery — they're decoding the strange, regular flashes with the hope of finding what's causing the "transient lunar phenomena".
The team has built a special telescope for the task that uses artificial intelligence (AI) to autonomously watch for and pick up on the light flashes.
The telescope collects video and photographs whenever it picks up on a flash of light, which will then be studied by scientists to decode the underlying cause. The team is planning to upgrade it soon with a neural network that can also filter out false positives, like birds and airplanes, from actual flashes from the lunar surface. For now, researchers do have some ideas about what could be causing them.
One of the causes could be the Moon's seismic activity, Hakan Kayal, professor of space technology at JMU, told Metro. "When the surface moves, gases that reflect sunlight could escape from the interior of the moon. This would explain the luminous phenomena, some of which last for hours".
However, the brief flashes that only last minutes or seconds are less understood. The leading theory for these shorter flashes is meteorite impacts. "Such flashes could also occur when electrically charged particles of the solar wind react with moon dust".MareKromium
(4 voti)
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ZZ-ZZ-U-Lunar_impact_Gif_pillars.gifImpact on the Moon?148 visiteSince March 2017, the NELIOTA project has been monitoring the dark side of the Moon for flashes of light caused by tiny pieces of rock striking the Moon's surface.
This sequence of 12 consecutive frames shows a bright flash detected on 4 frames during observations on 1 March 2017. The red arrows point to the location of the impact flash, near the edge of the frame.MareKromium
(4 voti)
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The_Moon_-_Rupes_Recta-1.jpgRupes Recta302 visiteMareKromium
(4 voti)
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The_Moon_-_Rupes_Recta-2.jpgRupes Recta198 visiteMareKromium
(4 voti)
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The_Moon_-_Rupes_Recta-3.jpgRupes Recta206 visiteMareKromium
(4 voti)
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SouthPolarEclipse.jpgLunar Eclipse from the South Pole55 visiteCaption NASA:"The Moon was up continuously for 14 days in August -- when viewed from the South Pole. But during the total Lunar Eclipse on August 28, it circled only about 10° above the horizon. For Robert Scharwz, the resulting long line-of-sight through the atmosphere that blurred his images was a minor problem when he recorded this 4-hour long Lunar Eclipse sequence. A more severe problem was the outdoor air temperature of - 68° C (such as - 90 F). The extreme cold required him to make the series of exposures through a slit in a window from inside a heated room. Though the heat produced convection and further blurring, it was the only way to keep the camera at a reasonable operating temperature for an extended period of time. Still, he was rewarded with this impressive record of August's lunar eclipse from a unique perspective on planet Earth".MareKromium
(4 voti)
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Red_Moon.jpgDark Lunar Eclipse56 visiteCaption NASA:"The Moon passed close to the center of Earth's shadow on August 28th, 2007. Seen best by skywatchers in western North America and the Pacific Region, the resulting Total Lunar Eclipse was a dark one, lasting about 90 minutes. In this telescopic image taken near mid totality from Yass, NSW Australia, the 85 Km wide ray crater Tycho lies near the top right of the shadowed lunar surface.
Of course, even during a Total Lunar Eclipse, the Moon is not completely dark. Instead the Moon remains visible during totality, reflecting reddened light filtering into the Earth's shadow.
The light comes from all the Sunsets and Sunrises, as seen from the lunar perspective, around the edges of a silhouetted Earth".MareKromium
(4 voti)
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Moon-SouthernSide.jpgThe Southern Highlands of the Moon (Moretus and Curtius)69 visiteCaption NASA:"The Moon's South Pole is near the top of this sharp telescopic view looking across the Southern Lunar Highlands. Recorded on August 3rd, 2007, from Tecumseh, Oklahoma, planet Earth, the foreshortened perspective heightens the impression of a dense field of craters and makes the craters themselves appear more oval shaped. The prominent crater in the foreground, Moretus, has a diameter of 114 Km and lies just west (left) of the Moon's Central Meridian. For large lunar craters, Moretus is young and features terraced inner walls and a 2,1 Km high, bright central peak, similar in appearance to the more northerly crater Tycho. Just to the right of Moretus is the 95 Km diameter crater Curtius.
Curtius has older, rounded walls marked by smaller, more recent impact craters".MareKromium
(4 voti)
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B-Pirquet_3D.jpgPirquet Crater (3D)83 visitenessun commento
(4 voti)
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