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Jupiter: the "King" and His Moons
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Jupiter-Impact-2010-003.jpgImpact on Jupiter! (from Hubble Space Telescope - ctx frame)56 visiteNASA scientists have interrupted the checkout and calibration of the Hubble Space Telescope to aim the recently refurbished observatory at a new expanding spot on the giant planet Jupiter. The spot, caused by the impact of a comet or an asteroid, is changing day to day in the Planet's cloud tops.
For the past several days the world's largest telescopes have been trained on Jupiter. Not to miss the potentially new science in the unfolding drama 360 MMs away, Space Telescope Science Institute director Matt Mountain allocated discretionary time to a team of astronomers led by Heidi Hammel of the Space Science Institute in Boulder, Colo.
The Hubble picture, taken on July 23, 2009, is the sharpest visible-light picture taken of the impact feature. The observations were made with Hubble's new camera, the Wide Field Camera 3 (WFC3).
"This image of the impact on Jupiter is fantastic" said U.S. Senator Barbara A. Mikulski, D-Md., chairwoman of the Commerce, Justice and Science Appropriations Subcommittee. "It tells us that our astronauts and ground crew at the Goddard Space Flight Center successfully repaired the Hubble telescope".
"This is just one example of what Hubble's new, state-of-the-art camera can do, thanks to the STS-125 astronauts and the entire Hubble team," said Ed Weiler, associate administrator of NASA's Science Mission Directorate. "However, the best is yet to come!".
"Hubble's truly exquisite imaging capability has revealed an astonishing wealth of detail in the 2009 impact site" said Hammel. "By combining these images with our ground-based data at other wavelengths, our Hubble data will allow a comprehensive understanding of exactly what is happening to the impact debris. My sincerest congratulations and thanks to the team who created Wide Field Camera 3 and to the astronauts who installed it!".
Co-investigator Imke de Pater of the University of California at Berkeley said: "The combination of the Hubble data with mid-infrared images from the Gemini telescope will give us an insight into changes of the vertical structure of the atmosphere due to the impact".MareKromium
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Jupiter-Impact-2010-004.jpgImpact on Jupiter! (from Hubble Space Telescope - edm)56 visiteDiscovered by Australian amateur astronomer Anthony Wesley on Sunday, July 19, 2009, the spot was created when a small object plunged into Jupiter's atmosphere and disintegrated. The only other time in history such a feature has been seen on Jupiter was 15 years ago.
"This is strikingly similar to the comet Shoemaker Levy 9 that impacted Jupiter in July 1994" said team member Keith Noll of the Space Telescope Science Institute in Baltimore, Md.
"Since we believe this magnitude of impact is rare, we are very fortunate to see it with Hubble" added Amy Simon-Miller of NASA's Goddard Space Flight Center in Greenbelt, Md. She explained that the details seen in the Hubble view shows a lumpiness to the debris plume caused by turbulence in Jupiter's atmosphere. The spot is presently twice the length of the United States.
Simon-Miller estimated that the diameter of the object that slammed into Jupiter was at least the size of several football fields. The force of the explosion on Jupiter was thousands of times more powerful than the suspected comet or asteroid that exploded over the Tunguska River Valley in Siberia in June 1908.
The WFC3, installed by the STS-125 astronauts in May, is not yet fully calibrated. So while it is possible to obtain celestial images, the camera's full power cannot yet be realized for most observations. The WFC3 can still return meaningful science images that will complement the Jupiter pictures being taken with ground-based telescopes.
This is a Natural Color image of Jupiter as seen in Visible Light.
Credit: NASA, ESA, and H. Hammel (Space Science Institute, Boulder, Colo.), and the Jupiter Impact Team
The members of the Jupiter Impact Team are:
Dr. Heidi B. Hammel (Space Science Institute, Boulder, Colo.)
Dr. Amy Simon-Miller (NASA's Goddard Space Flight Center, Greenbelt, Md.)
Dr. Keith S. Noll (Space Telescope Science Institute, Baltimore, Md.)
Dr. Michael H. Wong (Space Telescope Science Institute, Baltimore, Md.)
Prof. John T. Clarke (Boston University, Boston, Mass.)
Prof. Imke de Pater (University of California, Berkeley, Calif.)
Dr. Glenn S. Orton (Jet Propulsion Laboratory, Pasadena, Calif.)
Dr. Agustin Sanchez-Lavega (University of the Basque Country, Spain)
CONTACT
Dwayne Brown
HQ, Washington
202-358-1726
dwayne.c.brown@nasa.gov
Ray Villard
Space Telescope Science Institute, Baltimore, Md.
410-338-4514
villard@stsci.eduMareKromium
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Jupiter-Impact-2010-005.jpgAnother Impact on Jupiter?91 visiteUN ALTRO BOLIDE ("FIREBALL") su Giove?
il giorno 20 Agosto 2010, alle ore 18:22 UT, un Astrofilo Giapponese, Masayuki Tachikawa, della città di Kumamoto, ha video-registrato quello che SEMBRA ESSERE l'aftermath di un impatto occorso sul Pianeta Giove.
Se l'ipotesi dell'impatto venisse confermata, questa sarebbe la terza volta in soli 13 mesi che gli Astrofili del Mondo intero rilevano segni di impatti su Giove. Gli eventi precedenti si sono verificati il 19 luglio 2009 ed il 3 Giugno 2010.
La maggiore speculazione che infiamma le più recenti discussioni riguardanti questo fenomeno ritiene che Giove possa essere colpito da bolidi (ed asteroidi?) assai più spesso di quanto si fosse finora ritenuto.
E' (anche) per questo motivo che svariati Ricercatori insistono a chiedere la creazione di una rete mondiale di telescopi destinati a monitorare costantemente il Gigante Gassoso e quindi (laddove possobile) a misurare le velocità d'impatto.
"Come l'evento del 3 giugno u.s., questo bolide non ha prodotto alcun residuo visibile", osserva comunque il Dr John Rogers, Direttore della sezione Giove della British Astronomical Association.MareKromium
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Jupiter-Impact-2010-006.jpgAnother Impact on Jupiter?75 visiteAlcune immagini ad Alta Risoluzione scattate prima e dopo l'Evento Anomalo (impatto?) che ha coinvolto il Pianeta Giove.
Così come commentano gli Osservatori (che, come potete vedere, hanno ripreso il Gigante da svariate località), non c'era nessun segno visibile sul Gigante (nè in RGB, né UV, né Metano) il quale facesse da "testimone" della verificazione di un impatto.
Infatti, a parte le ben visibili turbolenze che usualmente caratterizzano l'Alta Atmosfera Gioviana e la chiara di una macchia scura circolare (si tratta dell'ombra di uno dei Satelliti Galileiani - probabilmente Ganimede), non vi è traccia alcuna di "cicatrici atmosferiche" le quali possano far supporre l'avvenuta verificazione di un Evento d'Impatto.MareKromium
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Jupiter-Impact-2010-007.jpgAnother Impact on Jupiter?68 visiteUn'altra immagine della "Fireball" che ha impattato Giove il giorno 20 Agosto u.s.
In questo caso si tratta di una ripresa effettuata dall'Astrofilo Giapponese Aoki Kazuo, da Tokio, il quale ha registrato un flash che, per coordinate spazio-temporali, coincide con quello rilevato e ripreso dall'altro Astrofilo del Sol Levante, Masayuki Tachikawa, che osservava il Gigante Gassoso dalla città di Kumamoto (la quale è distante circa 800 Km da Tokio).MareKromium
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Jupiter-Impact006-ALPO.gifEvolution of the Impact on Jupiter (GIF-Movie)56 visiteDa "NASA - Picture of Day" del giorno 8 Settembre 2009:"Two months ago, something unexpected hit Jupiter.
First discovered by amateur astronomer Anthony Wesley on 2009 July 19, the impact was quickly confirmed and even imaged by the Hubble Space Telescope the very next day. Many of the world's telescopes then zoomed in on our Solar System's largest Planet to see the result.
Some of these images have been complied into the above animation. Over the course of the last month and a half, the above time-lapse sequence shows the Dark Spot - first created when Jupiter was struck - deforming and dissipating as Jupiter's clouds churned and Jupiter rotated.
It is now thought that a small comet -- perhaps less than one kilometer across -- impacted Jupiter on or before 2009 July 19. Although initially expected to be visible for only a week, astronomers continue to track atmospheric remnants of the impact for new information about winds and currents in Jupiter's thick Atmosphere".MareKromium
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Jupiter-Impact02.jpgImpact on Jupiter!57 visitenessun commentoMareKromium
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Jupiter-Impact04-PIA12147.jpgImpact on Jupiter!56 visitenessun commentoMareKromium
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Jupiter-Impact05-PIA12148.jpgImpact on Jupiter!56 visitenessun commentoMareKromium
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Jupiter-Juno-2024-1-Ita.jpgJ & J102 visiteAlcune informazioni di base: dopo un viaggio durato più di cinque anni, la sonda Juno è entrata in orbita attorno a Giove il 4 luglio 2016. Distanza dalla Terra: 1,74 miliardi di miglia. Il 24 ottobre ha effettuato il suo ottavo sorvolo ravvicinato, attraversando la coltre nuvolosa del pianeta e avvicinandosi a soli 3.400 chilometri dalla superficie di Giove. La sua missione? Raccogliere dati e immagini del pianeta più grande del nostro Sistema Solare da trasmettere sulla Terra.
Dopo un ritardo (Fase Iniziale) nella trasmissione dei dati, dovuto a una congiunzione solare che ha interrotto le comunicazioni tra Giove e la Terra a causa dell'eccessiva vicinanza al Sole, le informazioni, memorizzate nella sonda Juno, sono arrivate alla NASA e i risultati sono sorprendenti. Le immagini mostrano i misteriosi Poli Nord e Sud del pianeta, così come gigantesche tempeste di gas.
In attesa di nuovi sorvoli, vi mostriamo alcune splendide immagini trasmesse dalla sonda relative al gigante gassoso, il quinto pianeta del Sistema Solare.MareKromium
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Jupiter-Juno-2024-4-Deutsch.jpgAtmosphärische Turbulenzen137 visiteZur Vorgeschichte: nach einer über fünfjährigen Reise erreichte die Raumsonde Juno am 4. Juli 2016 die Umlaufbahn um Jupiter. Entfernung zur Erde: 1,74 Milliarden Meilen. Am 24. Oktober absolvierte sie ihren achten nahen Vorbeiflug, durchquerte die Wolkendecke des Planeten und näherte sich Jupiters Oberfläche bis auf 3.400 Kilometer. Ihre Mission? Daten und Bilder des größten Planeten unseres Sonnensystems zu sammeln und zur Erde zu übermitteln.
Nach einer Verzögerung (Anfangsphase) bei der Datenübertragung aufgrund einer Sonnenkonjunktion, bei der die Kommunikation zwischen Jupiter und Erde durch die extreme Nähe zur Sonne unterbrochen wurde, erreichten die in der Juno-Sonde gespeicherten Daten die NASA – und die Ergebnisse sind verblüffend. Die Bilder zeigen die geheimnisvollen Nord- und Südpole des Planeten sowie gigantische Gasstürme. Während wir auf weitere nahe Vorbeiflüge warten, präsentieren wir Ihnen einige beeindruckende Bilder, die die Sonde vom Gasriesen, dem fünften Planeten unseres Sonnensystem.MareKromium
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Jupiter-Juno-2024-6.jpgGas Storms85 visiteSome background information: after a journey lasting more than five years, the Juno spacecraft arrived in orbit around Jupiter on July 4, 2016. Distance from Earth: 1.74 billion miles. On October 24, it performed its eighth close flyby, passing through the planet's cloud cover and approaching to within just 3,400 kilometers of Jupiter's surface. Its mission? To collect data and images of the largest planet in our Solar System to transmit to Earth.
After a delay (Initial Phase) in data transmission, due to a solar conjunction in which communications between Jupiter and Earth were interrupted by its excessive proximity to the sun, the information, stored within the Juno probe, arrived at NASA, and the results are astonishing. The images show the planet's mysterious North and South Poles, as well as gigantic gas storms.
While we wait for new Fly-Vyes, we show you some beautiful images transmitted by the probe relating to the gas giant, the fifth planet of the Solar System.MareKromium
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