Jupiter: the "King" and His Moons
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Jupiter-V1-PIA01518_modest.jpgThe "Plume"53 visiteCaption NASA originale:"Reconstruction of a plume on Jupiter, photographed on March 1st, 1979".
Nota: in questo frangente per "plume" si intende uno 'sbuffo' di nuvole bianche e vaporose le quali si distinguono nettamente dal resto del paesaggio circostante.
L'espressione "plume", di regola, viene invece impiegata per indicare il 'pennacchio' di fumo che caratterizza i vulcani in fase eruttiva (innumerevoli sono, infatti, le "plumes" che vediamo sul piccolo - ma attivissimo! - Io).
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Jupiter-V2-LAFT-PIA01370_modest.jpgLate afternoon on Jupiter...53 visiteCaption NASA originale:"This color composite made from Voyager 2 narrow-angle camera frames shows the Great Red Spot during the late Jovian afternoon. North of the Red Spot lies a curious darker section of the South Equatorial Belt (SEB), the belt in which the Red Spot is located. A bright eruption of material passing from the SEB northward into the diffuse equatorial clouds has been observed on all occasions when this feature passes north of the Red Spot. The remnants of one such eruption are apparent in this photograph".
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Jupiter-V2-PIA00343_modest.jpgJupiter in full detail, by Voyager 256 visiteCaption NASA originale:"The colors have been enhanced to bring out detail. Zones of light-colored, ascending clouds alternate with bands of dark, descending clouds. The clouds travel around the planet in alternating eastward and westward belts at speeds of up to 540 Km p/h. Tremendous storms as big as Earthly continents surge around the planet. The Great Red Spot is an enormous anticyclonic storm that drifts along its belt, eventually circling the entire planet".
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Jupiter-V2-PIA01527_modest.jpgThe "Red Spot" of Jupiter53 visiteCaption NASA originale:"The region of white clouds now extends from east of the Red Spot and around its northern boundary, preventing small cloud vortices from circling the feature. The disturbed region west of the Red Spot has also changed since the equivalent Voyager 1 image. It shows more small scale structure and cloud vortices being formed out of the wave structures. The picture was taken on July 3, 1979, from about 6 MKM".
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Jupiter-WO-PIA01513_modest.jpgWhite Ovals on Jupiter53 visiteCaption NASA originale:"This photo of Jupiter was taken by Voyager 1 on March 1st, 1979, from a distance of 4.300.000 Km. The region shown is just to the southeast of the Great Red Spot. A small section of the spot can be seen at upper left. One of the 40-year-old white ovals in Jupiter's atmosphere can also be seen at middle left, as well as a wealth of other atmospheric features, including the flow lines in and around the ovals.
The smallest details that can be seen in this photo are about 80 Km across".
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Jupiter-WST.pngBeautiful Jupiter! - Credits JWST86 visitenessun commentoMareKromium
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Jupiter-White_Storm-PIA23445.jpgWhite Storm on Jupiter141 visiteCaption NASA Originale:"This view of Jupiter's Upper Atmosphere from NASA's Juno Spacecraft includes something remarkable: two storms caught in the act of merging.
The two white ovals seen within the orange-colored band left of center are Anticyclonic Storms — that is, storms that rotate counter-clockwise. The larger of the two ovals has been tracked for many years, as it grew in size through mergers with other Anticyclonic white ovals.
JunoCam was fortunate to capture this new merger, which typically takes place over the course of only a few days.
The event interests scientists because the ovals had approached each other months earlier, only to move apart again.
This merger may be the result of perturbations due to the proximity of Oval BA, which is the larger storm just to the North of the two merging, white ovals. Oval BA is the second largest Anticyclonic Vortex in Jupiter's Atmosphere (second only to the famous Great Red Spot). During this pass over Jupiter, Juno gave scientists their best views of Oval BA to date.
Citizen scientist Tanya Oleksuik created this color-enhanced image using data from the JunoCam camera. The original image was taken on December, 26, 2019, at 10:28 a.m. PST (1:28 p.m. EST) as the Juno Spacecraft performed its 24th close fly-by of the Planet. At the time, the Spacecraft was about 44.900 miles (such as approx. 72.259,54 Km) from the tops of Jupiter's clouds, at a latitude of about 60° South".MareKromium
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Jupiter-changes.jpgChangings in the Atmosphere of Jupiter85 visiteStraordinario e, al momento, piuttosto inspiegabile: non credete?MareKromium
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Jupiter-lor_0035089864_0x630_sci_1.jpgJupiter's Ring53 visiteDescription: Jupiter's Ring - Main Ring vertical structure including ripples
Time: 2007-03-01 21:19:04 UTC
Exposure: 3000 msec
Target: Jupiter
Range: 3,6 MKM
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Jupiter-water cloud-GAL-PIA01639_modest.jpgWater clouds on Jupiter66 visiteThis false-color picture of a convective thunderstorm 10.000 Km(6.218 miles) northwest of Jupiter's Great Red Spot was obtained by NASA's Galileo spacecraft on June 26, 1996. The white cloud in the center is a tall, thick cloud about 1.000 Km (620 miles) across, standing 25 Km (15 miles) higher than most of the surrounding clouds. Its base extends off to the left and appears red in this representation. This red color indicates that the cloud base is very deep in the atmosphere, about 50 Km (30 miles) below the surrounding clouds. Most of the wisps and features in Jupiter's clouds are thick and thin ammonia clouds, forming at a pressure just less than Earth's sea level pressure. On Jupiter, water is the only substance to form a cloud at a depth where the pressure is about 5 times the Earth's sea level pressure. The red base of this thunderstorm is so deep that it can only be a water cloud. In 1979 NASA's Voyager spacecraft saw convective clouds of this type near the Great Red Spot. They erupted like this roughly once every 10 days and lasted a few days each. But Voyager's cameras could not allow the determination of the storms' altitude. It is thought that this storm is analogous to an Earth thunderstorm, with the cloud's high, bright, white portion comparable to the familiar anvil cloud on Earth. Whether any rain or snow is falling below this cloud is unknown, but there are indications that similar storms on Jupiter have lightning in them.
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Jupiter.jpgA "Hole" in the King!106 visiteNaturalmente non è un "buco": solo l'ambra di Ganymede, che oscura una piccola Regione del Gigante Gassoso. Un raffronto fra questa immagine e quella che propone l'ombra di Io (PIA23437) potrebbe risultare interessante...MareKromium
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JupiterSpots-HST.jpgThe "Eyes" of Jupiter83 visiteFor about 300 years Jupiter's "Banded" Atmosphere has shown a remarkable feature to telescopic viewers, a large swirling storm system known as "The Great Red Spot". In 2006, another red storm system appeared, actually seen to form as smaller whitish oval-shaped storms merged and then developed the curious reddish hue. Now, Jupiter has a third red spot, again produced from a smaller whitish storm. All three are seen in this image made from data recorded on May 9 and 10 with the Hubble Space Telescope's Wide Field and Planetary Camera 2. The spots extend above the surrounding clouds and their red color may be due to deeper material dredged up by the storms and exposed to ultraviolet light, but the exact chemical process is still unknown. For scale, the Great Red Spot has almost twice the diameter of planet Earth, making both new spots less than one Earth-diameter across. The newest red spot is on the far left (West), along the same band of clouds as the Great Red Spot and is drifting toward it. If the motion continues, the new spot will encounter the much larger storm system in August. Jupiter's recent outbreak of red spots is likely related to large scale climate change as the gas Giant Planet is getting warmer near the Equator.MareKromium
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