Jupiter: the "King" and His Moons
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JUPITER from 77,6 MKM.jpgJupiter from 77,6 MKM58 visiteDid you know that the "Planet With The Shortest Day" is Jupiter?
The planet Jupiter has the shortest day of all the nine major planets in the Solar System: it spins around on its axis once every 9 hrs 55 mins and 29,69 secs. Jupiter is about five times further from the Sun than the Earth and so it's years are much longer than Earth years: Jupiter completes one "year" in 4.332,6 Earth days. Jupiter is also one of the brightest objects in the night sky (jointly with the star Syrius and planet Venus in our Northern Hemisphere and with the Alpha and Beta Centauri star system in the Southern Hemisphere).
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JUPITER from 81,3 MKM.jpgJupiter from 81,3 MKM57 visitenessun commento
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JUPITER from 84,1 MKM.jpgJupiter from 84,1 MKM56 visitenessun commento
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JUPITER-Lightnings.jpgJupiter's Lightnings95 visiteIn the data from Juno’s first eight passes by the planet, the spacecraft’s Microwave Radiometer Instrument (MWR) detected 377 Jovian lightning discharges. Scientists saw that lightning on Jupiter can be as frequent as it is on Earth.MareKromium
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JUPITER_S_RINGS-00.jpgJupiter's rings129 visiteIl profilo di Giove non ci mostra i suoi colori così come invece era avvenuto nell'immagine precedente, ma l'immagine è comunque bella e spettacolare, nonchè interessante: lo vedete il "gap" negli Anelli di Giove che spicca a ridosso del disco del Pianeta, sulla Sx dell'Osservatore?
Si tratta, come ovvio, di un semplice effetto ottico causato dalla particolare prospettiva dalla quale la ripresa è stata effettuata: è l'ombra stessa di Giove, infatti, a "cancellare" una porzione del sottile filo di detriti cosmici che forma il Sistema Anulare del Gigante Gassoso.
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JUPITER_S_RINGS-01-PIA25038_width-640.jpg95 visiteCaption NASA Originale:"This high-resolution image of Jupiter's main dust ring was collected by the Stellar Reference Unit (SRU) navigation camera aboard NASA's Juno spacecraft. The image was taken from inside the ring looking out as Juno flew between Jupiter and the radiation belts during the spacecraft's 36th close flyby on Sept. 2, 2021. The brightest thin dust bands are associated with the orbits of Jupiter's small moons, Metis and Adrastea. The image is at a resolution of nearly 20 miles (32 kilometers) per pixel".MareKromium
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Jupiter - HST.jpgTriple eclypse on Jupiter (false colors - HST)63 visiteDa "NASA - Picture of the Day" dell'11.11.2004: "This false-color image of banded gas giant Jupiter shows a triple eclipse in progress on March 28 - a relatively rare event, even for a large planet with many moons. Captured by the Hubble Space Telescope's near-infrared camera are shadows of Jupiter's moons Ganymede (left edge), Callisto (right edge) and Io, three black spots crossing the sunlit Jovian cloud tops. In fact, Io itself is visible as a white spot near picture center with a bluish Ganymede above and to the right, but Callisto is off the right hand edge of the scene. Viewed from Jupiter's perspective, these shadow crossings would be seen as solar eclipses, analogous to the Moon's shadow crossing the sunlit face of planet Earth. Historically, timing the eclipses of Jupiter's moons allowed astronomer Ole Roemer to make the first accurate measurement of the speed of light in 1676".
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Jupiter&Comet Shoemaker.jpgComet Shoemaker impacting Jupiter57 visiteQuesta spettacolare ripresa - ottenuta dall'HST - ci mostra alcuni dettagli relativi ai momenti successivi alla sequenza di impatti che, nel Luglio 1994, interessarono gli strati superiori dell'atmosfera di Giove.
Per quelli che non ricordano tutta la storia diciamo che queste immagini ci raccontano della fine (spettacolare, comunque) incontrata dai residui della cometa Shoemaker-Levy la quale, durante la sua corsa verso l'interno del Sistema Solare - ivi, lo Spazio di Giove -, venne "fatta a pezzi" (letteralmente) dalle onde gravitazionali provenienti dal Re dei Giganti Gassosi.
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Jupiter, Europa & Callisto.jpgJupiter, Europa and Callistus58 visitenessun commento
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Jupiter-00.jpgJupiter (natural colors)57 visitenessun commento
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Jupiter-00.jpgInternal Heat Drives Jupiter's Giant Storm Eruption (VL)55 visiteAn image of Jupiter in Visible-Light (VL) from NASA's Hubble Space Telescope (HST) on May 11, 2007 showing the turbulent pattern generated by the two plumes at the upper left part of Jupiter.
MareKromium
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Jupiter-01.jpgWhat's inside Jupiter?57 visitenessun commento
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