Galerie de photos de la planète Jupiter

<h1>PIA01206: Jupiter's Equatorial Region in a Methane band (Time set 3)</h1><div class="PIA01206" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Mosaic of Jupiter's equatorial region at 727 nanometers (nm). The mosaic covers an area of 34,000 kilometers by 22,000 kilometers. Light at 727 nm is moderately absorbed by atmospheric methane. This image shows the features of Jupiter's main visible cloud deck and upper-tropospheric haze, with higher features enhanced in brightness over lower features. The dark region near the center of the mosaic is an equatorial "hotspot" similar to the Galileo Probe entry site. These features are holes in the bright, reflective, equatorial cloud layer where warmer thermal emission from Jupiter's deep atmosphere can pass through. The circulation patterns observed here along with the composition measurements from the Galileo Probe suggest that dry air may be converging and sinking over these regions, maintaining their cloud-free appearance. The bright oval in the upper right of the mosaic as well as the other smaller bright features are examples of upwelling of moist air and condensation.<p>North is at the top. The mosaic covers latitudes 1 to 19 degrees and is centered at longitude 336 degrees West. The planetary limb runs along the right edge of the image. Cloud patterns appear foreshortened as they approach the limb. The smallest resolved features are tens of kilometers in size. These images were taken on December 17, 1996, at a range of 1.5 million kilometers by the Solid State Imaging system aboard NASA's Galileo spacecraft.<p>The Jet Propulsion Laboratory, Pasadena, CA manages the mission for NASA's Office of Space Science, Washington, DC.<p>This image and other images and data received from Galileo are posted on the World Wide Web, on the Galileo mission home page at URL http://galileo.jpl.nasa.gov. Background information and educational context for the images can be found at <a href="http://www2.jpl.nasa.gov/galileo/sepo/" target="_blank">http://www.jpl.nasa.gov/galileo/sepo</a>..<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01206" onclick="window.open(this.href); return false;" title="Voir l'image PIA01206: Jupiter's Equatorial Region in a Methane band (Time set 3) sur le site de la NASA">Voir l'image PIA01206: Jupiter's Equatorial Region in a Methane band (Time set 3) sur le site de la NASA.</a></div>
PIA01206: Jupiter's Equatorial Region in a Methane band (Time set 3)
<h1>PIA01207: Jupiter's Equatorial Region in a Methane band (Time set 3)</h1><div class="PIA01207" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Mosaic of an equatorial "hotspot" on Jupiter at 889 nanometers (nm). The mosaic covers an area of 34,000 kilometers by 11,000 kilometers. Light at 889 nm is strongly absorbed by atmospheric methane. This image shows the features of a hazy cloud layer tens of kilometers above Jupiter's main visible cloud deck. This haze varies in height but appears to be present over the entire region. Small patches of very bright clouds may be similar to terrestrial thunderstorms. The dark region near the center of the mosaic is an equatorial "hotspot" similar to the Galileo Probe entry site. These features are holes in the bright, reflective, equatorial cloud layer where warmer thermal emission from Jupiter's deep atmosphere can pass through. The circulation patterns observed here along with the composition measurements from the Galileo Probe suggest that dry air may be converging and sinking over these regions, maintaining their cloud-free appearance.<p>North is at the top. The mosaic covers latitudes 1 to 10 degrees and is centered at longitude 336 degrees West. The planetary limb runs along the right edge of the image. Cloud patterns appear foreshortened as they approach the limb. The smallest resolved features are tens of kilometers in size. These images were taken on December 17, 1996, at a range of 1.5 million kilometers by the Solid State Imaging system aboard NASA's Galileo spacecraft.<p>The Jet Propulsion Laboratory, Pasadena, CA manages the mission for NASA's Office of Space Science, Washington, DC.<p>This image and other images and data received from Galileo are posted on the World Wide Web, on the Galileo mission home page at URL http://galileo.jpl.nasa.gov. Background information and educational context for the images can be found at <a href="http://www2.jpl.nasa.gov/galileo/sepo/" target="_blank">http://www.jpl.nasa.gov/galileo/sepo</a>..<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01207" onclick="window.open(this.href); return false;" title="Voir l'image PIA01207: Jupiter's Equatorial Region in a Methane band (Time set 3) sur le site de la NASA">Voir l'image PIA01207: Jupiter's Equatorial Region in a Methane band (Time set 3) sur le site de la NASA.</a></div>
PIA01207: Jupiter's Equatorial Region in a Methane band (Time set 3)
<h1>PIA01208: Jupiter's Equatorial Region in Violet Light (Time set 3)</h1><div class="PIA01208" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Mosaic of an equatorial "hotspot" on Jupiter at 410 nanometers (nm). The mosaic covers an area of 34,000 kilometers by 11,000 kilometers. Light at 410 nm is affected by the sizes and compositions of cloud particles, as well as the trace chemicals that give Jupiter's clouds their colors. This image shows the features of Jupiter's main visible cloud deck and the hazy cloud layer above it. The dark region near the center of the mosaic is an equatorial "hotspot" similar to the Galileo Probe entry site. These features are holes in the bright, reflective, equatorial cloud layer where warmer thermal emission from Jupiter's deep atmosphere can pass through. The circulation patterns observed here along with the composition measurements from the Galileo Probe suggest that dry air may be converging and sinking over these regions, maintaining their cloud-free appearance.<p>North is at the top. The mosaic covers latitudes 1 to 10 degrees and is centered at longitude 336 degrees West. The planetary limb runs along the right edge of the image. Cloud patterns appear foreshortened as they approach the limb. The smallest resolved features are tens of kilometers in size. These images were taken on December 17, 1996, at a range of 1.5 million kilometers by the Solid State Imaging system aboard NASA's Galileo spacecraft.<p>The Jet Propulsion Laboratory, Pasadena, CA manages the mission for NASA's Office of Space Science, Washington, DC.<p>This image and other images and data received from Galileo are posted on the World Wide Web, on the Galileo mission home page at URL http://galileo.jpl.nasa.gov. Background information and educational context for the images can be found at <a href="http://www2.jpl.nasa.gov/galileo/sepo/" target="_blank">http://www.jpl.nasa.gov/galileo/sepo</a>..<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01208" onclick="window.open(this.href); return false;" title="Voir l'image PIA01208: Jupiter's Equatorial Region in Violet Light (Time set 3) sur le site de la NASA">Voir l'image PIA01208: Jupiter's Equatorial Region in Violet Light (Time set 3) sur le site de la NASA.</a></div>
PIA01208: Jupiter's Equatorial Region in Violet Light (Time set 3)
<h1>PIA01209: Jupiter's Equatorial Region in the Near-Infrared (Time set 4)</h1><div class="PIA01209" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Mosaic of Jupiter's equatorial region at 756 nanometers (nm). The mosaic covers an area of 34,000 kilometers by 22,000 kilometers. The near-infrared continuum filter shows the features of Jupiter's main visible cloud deck. The dark region near the center of the mosaic is an equatorial "hotspot" similar to the Galileo Probe entry site. These features are holes in the bright, reflective, equatorial cloud layer where warmer thermal emission from Jupiter's deep atmosphere can pass through. The circulation patterns observed here along with the composition measurements from the Galileo Probe suggest that dry air may be converging and sinking over these regions, maintaining their cloud-free appearance. The bright oval in the upper right of the mosaic as well as the other smaller bright features are examples of upwelling of moist air and condensation.<p>North is at the top. The mosaic covers latitudes 1 to 19 degrees and is centered at longitude 336 degrees West. The smallest resolved features are tens of kilometers in size. These images were taken on December 17, 1996, at a range of 1.5 million kilometers by the Solid State Imaging system aboard NASA's Galileo spacecraft.<p>The Jet Propulsion Laboratory, Pasadena, CA manages the mission for NASA's Office of Space Science, Washington, DC.<p>This image and other images and data received from Galileo are posted on the World Wide Web, on the Galileo mission home page at URL http://galileo.jpl.nasa.gov. Background information and educational context for the images can be found at <a href="http://www2.jpl.nasa.gov/galileo/sepo/" target="_blank">http://www.jpl.nasa.gov/galileo/sepo</a>..<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01209" onclick="window.open(this.href); return false;" title="Voir l'image PIA01209: Jupiter's Equatorial Region in the Near-Infrared (Time set 4) sur le site de la NASA">Voir l'image PIA01209: Jupiter's Equatorial Region in the Near-Infrared (Time set 4) sur le site de la NASA.</a></div>
PIA01209: Jupiter's Equatorial Region in the Near-Infrared (Time set 4)
<h1>PIA01210: Jupiter's Equatorial Region in a Methane band (Time set 4)</h1><div class="PIA01210" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Mosaic of Jupiter's equatorial region at 727 nanometers (nm). The mosaic covers an area of 34,000 kilometers by 22,000 kilometers. Light at 727 nm is moderately absorbed by atmospheric methane. This image shows the features of Jupiter's main visible cloud deck and upper-tropospheric haze, with higher features enhanced in brightness over lower features. The dark region near the center of the mosaic is an equatorial "hotspot" similar to the Galileo Probe entry site. These features are holes in the bright, reflective, equatorial cloud layer where warmer thermal emission from Jupiter's deep atmosphere can pass through. The circulation patterns observed here along with the composition measurements from the Galileo Probe suggest that dry air may be converging and sinking over these regions, maintaining their cloud-free appearance. The bright oval in the upper right of the mosaic as well as the other smaller bright features are examples of upwelling of moist air and condensation.<p>North is at the top. The mosaic covers latitudes 1 to 19 degrees and is centered at longitude 336 degrees West. The smallest resolved features are tens of kilometers in size. These images were taken on December 17, 1996, at a range of 1.5 million kilometers by the Solid State Imaging system aboard NASA's Galileo spacecraft.<p>The Jet Propulsion Laboratory, Pasadena, CA manages the mission for NASA's Office of Space Science, Washington, DC.<p>This image and other images and data received from Galileo are posted on the World Wide Web, on the Galileo mission home page at URL http://galileo.jpl.nasa.gov. Background information and educational context for the images can be found at <a href="http://www2.jpl.nasa.gov/galileo/sepo/" target="_blank">http://www.jpl.nasa.gov/galileo/sepo</a>..<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01210" onclick="window.open(this.href); return false;" title="Voir l'image PIA01210: Jupiter's Equatorial Region in a Methane band (Time set 4) sur le site de la NASA">Voir l'image PIA01210: Jupiter's Equatorial Region in a Methane band (Time set 4) sur le site de la NASA.</a></div>
PIA01210: Jupiter's Equatorial Region in a Methane band (Time set 4)
<h1>PIA01227: Jupiter's Southern Hemisphere in the Near-Infrared (Time Set 1)</h1><div class="PIA01227" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Mosaic of Jupiter's southern hemisphere between -10 and -80 degrees (south) latitude. In time sequence one, the planetary limb is visible in near the bottom right part of the mosaic.<p>Jupiter's atmospheric circulation is dominated by alternating eastward and westward jets from equatorial to polar latitudes. The direction and speed of these jets in part determine the brightness and texture of the clouds seen in this mosaic. Also visible are several other common Jovian cloud features, including two large vortices, bright spots, dark spots, interacting vortices, and turbulent chaotic systems. The north-south dimension of each of the two vortices in the center of the mosaic is about 3500 kilometers. The right oval is rotating counterclockwise, like other anticyclonic bright vortices in Jupiter's atmosphere. The left vortex is a cyclonic (clockwise) vortex. The differences between them (their brightness, their symmetry, and their behavior) are clues to how Jupiter's atmosphere works. The cloud features visible at 756 nanometers (near-infrared light) are at an atmospheric pressure level of about 1 bar.<p>North is at the top. The images are projected onto a sphere, with features being foreshortened towards the south and east. The smallest resolved features are tens of kilometers in size. These images were taken on May 7, 1997, at a range of 1.5 million kilometers by the Solid State Imaging system on NASA's Galileo spacecraft.<p>The Jet Propulsion Laboratory, Pasadena, CA manages the mission for NASA's Office of Space Science, Washington, DC.<p>This image and other images and data received from Galileo are posted on the World Wide Web, on the Galileo mission home page at URL http://galileo.jpl.nasa.gov. Background information and educational context for the images can be found at <a href="http://www2.jpl.nasa.gov/galileo/sepo/" target="_blank">http://www.jpl.nasa.gov/galileo/sepo</a>..<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01227" onclick="window.open(this.href); return false;" title="Voir l'image PIA01227: Jupiter's Southern Hemisphere in the Near-Infrared (Time Set 1) sur le site de la NASA">Voir l'image PIA01227: Jupiter's Southern Hemisphere in the Near-Infrared (Time Set 1) sur le site de la NASA.</a></div>
PIA01227: Jupiter's Southern Hemisphere in the Near-Infrared (Time Set 1)
<h1>PIA01228: Jupiter's Southern Hemisphere in the Near-Infrared (Time Set 2)</h1><div class="PIA01228" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Mosaic of Jupiter's southern hemisphere between -25 and -80 degrees (south) latitude. In time sequence two, taken nine hours after sequence one, the limb is visible near the bottom right part of the mosaic. The curved border near the bottom left indicates the location of Jupiter's day/night terminator.<p>Jupiter's atmospheric circulation is dominated by alternating eastward and westward jets from equatorial to polar latitudes. The direction and speed of these jets in part determine the brightness and texture of the clouds seen in this mosaic. Also visible are several other common Jovian cloud features, including two large vortices, bright spots, dark spots, interacting vortices, and turbulent chaotic systems. The north-south dimension of each of the two vortices in the center of the mosaic is about 3500 kilometers. The right oval is rotating counterclockwise, like other anticyclonic bright vortices in Jupiter's atmosphere. The left vortex is a cyclonic (clockwise) vortex. The differences between them (their brightness, their symmetry, and their behavior) are clues to how Jupiter's atmosphere works. The cloud features visible at 756 nanometers (near-infrared light) are at an atmospheric pressure level of about 1 bar.<p>North is at the top. The images are projected onto a sphere, with features being foreshortened towards the south and east. The smallest resolved features are tens of kilometers in size. These images were taken on May 7, 1997, at a range of 1.5 million kilometers by the Solid State Imaging system on NASA's Galileo spacecraft.<p>The Jet Propulsion Laboratory, Pasadena, CA manages the mission for NASA's Office of Space Science, Washington, DC.<p>This image and other images and data received from Galileo are posted on the World Wide Web, on the Galileo mission home page at URL http://galileo.jpl.nasa.gov. Background information and educational context for the images can be found at <a href="http://www2.jpl.nasa.gov/galileo/sepo/" target="_blank">http://www.jpl.nasa.gov/galileo/sepo</a>..<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01228" onclick="window.open(this.href); return false;" title="Voir l'image PIA01228: Jupiter's Southern Hemisphere in the Near-Infrared (Time Set 2) sur le site de la NASA">Voir l'image PIA01228: Jupiter's Southern Hemisphere in the Near-Infrared (Time Set 2) sur le site de la NASA.</a></div>
PIA01228: Jupiter's Southern Hemisphere in the Near-Infrared (Time Set 2)
<h1>PIA01229: Jupiter's Southern Hemisphere in the Near-Infrared (Time Set 3)</h1><div class="PIA01229" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Mosaic of Jupiter's southern hemisphere between -25 and -80 degrees (south) latitude. In time sequence three, taken 10 hours after sequence one, the limb is visible near the bottom right part of the mosaic.<p>Jupiter's atmospheric circulation is dominated by alternating eastward and westward jets from equatorial to polar latitudes. The direction and speed of these jets in part determine the brightness and texture of the clouds seen in this mosaic. Also visible are several other common Jovian cloud features, including two large vortices, bright spots, dark spots, interacting vortices, and turbulent chaotic systems. The north-south dimension of each of the two vortices in the center of the mosaic is about 3500 kilometers. The right oval is rotating counterclockwise, like other anticyclonic bright vortices in Jupiter's atmosphere. The left vortex is a cyclonic (clockwise) vortex. The differences between them (their brightness, their symmetry, and their behavior) are clues to how Jupiter's atmosphere works. The cloud features visible at 756 nanometers (near-infrared light) are at an atmospheric pressure level of about 1 bar.<p>North is at the top. The images are projected onto a sphere, with features being foreshortened towards the south and east. The smallest resolved features are tens of kilometers in size. These images were taken on May 7, 1997, at a range of 1.5 million kilometers by the Solid State Imaging system on NASA's Galileo spacecraft.<p>The Jet Propulsion Laboratory, Pasadena, CA manages the mission for NASA's Office of Space Science, Washington, DC.<p>This image and other images and data received from Galileo are posted on the World Wide Web, on the Galileo mission home page at URL http://galileo.jpl.nasa.gov. Background information and educational context for the images can be found at <a href="http://www2.jpl.nasa.gov/galileo/sepo/" target="_blank">http://www.jpl.nasa.gov/galileo/sepo</a>..<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01229" onclick="window.open(this.href); return false;" title="Voir l'image PIA01229: Jupiter's Southern Hemisphere in the Near-Infrared (Time Set 3) sur le site de la NASA">Voir l'image PIA01229: Jupiter's Southern Hemisphere in the Near-Infrared (Time Set 3) sur le site de la NASA.</a></div>
PIA01229: Jupiter's Southern Hemisphere in the Near-Infrared (Time Set 3)
<h1>PIA01254: Hubble Provides Complete View of Jupiter's Auroras</h1><div class="PIA01254" lang="en" style="width:795px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">NASA's Hubble Space Telescope has captured a complete view of Jupiter's northern and southern auroras.<p>Images taken in ultraviolet light by the Space Telescope Imaging Spectrograph (STIS) show both auroras, the oval-shaped objects in the inset photos. While the Hubble telescope has obtained images of Jupiter's northern and southern lights since 1990, the new STIS instrument is 10 times more sensitive than earlier cameras. This allows for short exposures, reducing the blurring of the image caused by Jupiter's rotation and providing two to five times higher resolution than earlier cameras. The resolution in these images is sufficient to show the "curtain" of auroral light extending several hundred miles above Jupiter's limb (edge). Images of Earth's auroral curtains, taken from the space shuttle, have a similar appearance. Jupiter's auroral images are superimposed on a Wide Field and Planetary Camera 2 image of the entire planet. The auroras are brilliant curtains of light in Jupiter's upper atmosphere. Jovian auroral storms, like Earth's, develop when electrically charged particles trapped in the magnetic field surrounding the planet spiral inward at high energies toward the north and south magnetic poles. When these particles hit the upper atmosphere, they excite atoms and molecules there, causing them to glow (the same process acting in street lights).<p>The electrons that strike Earth's atmosphere come from the sun, and the auroral lights remain concentrated above the night sky in response to the "solar wind."<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01254" onclick="window.open(this.href); return false;" title="Voir l'image PIA01254: Hubble Provides Complete View of Jupiter's Auroras sur le site de la NASA">Voir l'image PIA01254: Hubble Provides Complete View of Jupiter's Auroras sur le site de la NASA.</a></div>
PIA01254: Hubble Provides Complete View of Jupiter's Auroras
<h1>PIA01256: Hubble Captures Volcanic Eruption Plume From Io</h1><div class="PIA01256" lang="en" style="width:720px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The Hubble Space Telescope has snapped a picture of a 400-km-high (250-mile-high) plume of gas and dust from a volcanic eruption on Io, Jupiter's large innermost moon.<p>Io was passing in front of Jupiter when this image was taken by the Wide Field and Planetary Camera 2 in July 1996. The plume appears as an orange patch just off the edge of Io in the eight o'clock position, against the blue background of Jupiter's clouds. Io's volcanic eruptions blasts material hundreds of kilometers into space in giant plumes of gas and dust. In this image, material must have been blown out of the volcano at more than 2,000 mph to form a plume of this size, which is the largest yet seen on Io.<p>Until now, these plumes have only been seen by spacecraft near Jupiter, and their detection from the Earth-orbiting Hubble Space Telescope opens up new opportunities for long-term studies of these remarkable phenomena.<p>The plume seen here is from Pele, one of Io's most powerful volcanos. Pele's eruptions have been seen before. In March 1979, the Voyager 1 spacecraft recorded a 300-km-high eruption cloud from Pele. But the volcano was inactive when the Voyager 2 spacecraft flew by Jupiter in July 1979. This Hubble observation is the first glimpse of a Pele eruption plume since the Voyager expeditions.<p>Io's volcanic plumes are much taller than those produced by terrestrial volcanos because of a combination of factors. The moon's thin atmosphere offers no resistance to the expanding volcanic gases; its weak gravity (one-sixth that of Earth) allows material to climb higher before falling; and its biggest volcanos are more powerful than most of Earth's volcanos.<p>This image is a contrast-enhanced composite of an ultraviolet image (2600 Angstrom wavelength), shown in blue, and a violet image (4100 Angstrom wavelength), shown in orange. The orange color probably occurs because of the absorption and/or scattering of ultraviolet light in the plume. This light from Jupiter passes through the plume and is absorbed by sulfur dioxide gas or is scattered by fine dust, or both, while violet light passes through unimpeded. Future HST observations may be able to distinguish between the gas and dust explanations.<p>This image and other images and data received from the Hubble Space Telescope are posted on the World Wide Web on the Space Telescope Science Institute home page at URL <a href="http://oposite.stsci.edu/" class="external free" target="wpext">http://oposite.stsci.edu/</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01256" onclick="window.open(this.href); return false;" title="Voir l'image PIA01256: Hubble Captures Volcanic Eruption Plume From Io sur le site de la NASA">Voir l'image PIA01256: Hubble Captures Volcanic Eruption Plume From Io sur le site de la NASA.</a></div>
PIA01256: Hubble Captures Volcanic Eruption Plume From Io
<h1>PIA01257: Hubble Images Reveal Jupiter's Auroras</h1><div class="PIA01257" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>These images, taken by the Hubble Space Telescope, reveal changes in Jupiter's auroral emissions and how small auroral spots just outside the emission rings are linked to the planet's volcanic moon, Io. The images represent the most sensitive and sharply-detailed views ever taken of Jovian auroras.<p>The top panel pinpoints the effects of emissions from Io, which is about the size of Earth's moon. The black-and-white image on the left, taken in visible light, shows how Io and Jupiter are linked by an invisible electrical current of charged particles called a "flux tube." The particles - ejected from Io (the bright spot on Jupiter's right) by volcanic eruptions - flow along Jupiter's magnetic field lines, which thread through Io, to the planet's north and south magnetic poles. This image also shows the belts of clouds surrounding Jupiter as well as the Great Red Spot.<p>The black-and-white image on the right, taken in ultraviolet light about 15 minutes later, shows Jupiter's auroral emissions at the north and south poles. Just outside these emissions are the auroral spots. Called "footprints," the spots are created when the particles in Io's "flux tube" reach Jupiter's upper atmosphere and interact with hydrogen gas, making it fluoresce. In this image, Io is not observable because it is faint in the ultraviolet.<p>The two ultraviolet images at the bottom of the picture show how the auroral emissions change in brightness and structure as Jupiter rotates. These false-color images also reveal how the magnetic field is offset from Jupiter's spin axis by 10 to 15 degrees. In the right image, the north auroral emission is rising over the left limb; the south auroral oval is beginning to set. The image on the left, obtained on a different date, shows a full view of the north aurora, with a strong emission inside the main auroral oval.<p>The images were taken by the telescope's Wide Field and Planetary Camera 2 between May 1994 and September 1995.<p>This image and other images and data received from the Hubble Space Telescope are posted on the World Wide Web on the Space Telescope Science Institute home page at URL <a href="http://oposite.stsci.edu/" class="external free" target="wpext">http://oposite.stsci.edu/</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01257" onclick="window.open(this.href); return false;" title="Voir l'image PIA01257: Hubble Images Reveal Jupiter's Auroras sur le site de la NASA">Voir l'image PIA01257: Hubble Images Reveal Jupiter's Auroras sur le site de la NASA.</a></div>
PIA01257: Hubble Images Reveal Jupiter's Auroras
<h1>PIA01258: Rare Hubble Portrait of Io and Jupiter</h1><div class="PIA01258" lang="en" style="width:720px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This image, shows Jupiter's volcanic moon Io passing above the turbulent clouds of the giant planet, on July 24, 1996. The conspicuous black spot on Jupiter is Io's shadow. The shadow is about the size of Io (3,640 kilometers or 2,262 miles across) and sweeps across the face of Jupiter at 17 kilometers per second (38,000 miles per hour).<p>The smallest details visible on Io and Jupiter are about 100 miles across. Bright patches visible on Io are regions of sulfur dioxide frost. Io is roughly the size of Earth's moon, but 2,000 times farther away.<p>This one of a series of images of Io taken by Hubble to complement the close-up images currently being taken by the Galileo spacecraft now orbiting Jupiter. Though the Galileo images show much finer detail, Hubble provides complementary information because it can observe Io at ultraviolet wavelengths not seen by Galileo, can observe Io at different times than Galileo, and can view Io under more consistent viewing conditions.<p>The image was taken at violet wavelengths, with the Wide Field Planetary Camera 2, in PC mode.<p>This image and other images and data received from the Hubble Space Telescope are posted on the World Wide Web on the Space Telescope Science Institute home page at URL <a href="http://oposite.stsci.edu/" class="external free" target="wpext">http://oposite.stsci.edu/</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01258" onclick="window.open(this.href); return false;" title="Voir l'image PIA01258: Rare Hubble Portrait of Io and Jupiter sur le site de la NASA">Voir l'image PIA01258: Rare Hubble Portrait of Io and Jupiter sur le site de la NASA.</a></div>
PIA01258: Rare Hubble Portrait of Io and Jupiter
<h1>PIA01259: Hubble Views the Galileo Probe Entry Site on Jupiter</h1><div class="PIA01259" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>[left] - This Hubble Space Telescope image of Jupiter was taken on Oct. 5, 1995, when the giant planet was at a distance of 534 million miles (854 million kilometers) from Earth. The arrow points to the predicted site at which the Galileo Probe will enter Jupiter's atmosphere on December 7, 1995. At this latitude, the eastward winds have speeds of about 250 miles per hour (110 meters per second). The white oval to the north of the probe site drifts westward at 13 miles per hour (6 meters per second), rolling in the winds which increase sharply toward the equator. The Jupiter image was obtained with the high resolution mode of Hubble's Wide Field Planetary Camera 2 (WFPC2). Because the disk of the planet is larger than the field of view of the camera, image processing was used to combine overlapping images from three consecutive orbits to produce this full disk view of the planet.<p>[right] - These four enlarged Hubble images of Jupiter's equatorial region show clouds sweeping across the predicted Galileo probe entry site, which is at the exact center of each frame (a small white dot has been inserted at the centered at the predicted entry site). The first image (upper left quadrant) was obtained with the WFPC2 on Oct. 4, 1995 at (18 hours UT). The second, third and fourth images (from upper right to lower right) were obtained 10, 20 and 60 hours later, respectively. The maps extend +/- 15 degrees in latitude and longitude. The distance across one of the images is about three Earth diameters (37,433 kilometers). During the intervening time between the first and fourth maps, the winds have swept the clouds 15,000 miles (24,000 kilometers) eastward.<p>This image and other images and data received from the Hubble Space Telescope are posted on the World Wide Web on the Space Telescope Science Institute home page at URL <a href="http://oposite.stsci.edu/" class="external free" target="wpext">http://oposite.stsci.edu/</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01259" onclick="window.open(this.href); return false;" title="Voir l'image PIA01259: Hubble Views the Galileo Probe Entry Site on Jupiter sur le site de la NASA">Voir l'image PIA01259: Hubble Views the Galileo Probe Entry Site on Jupiter sur le site de la NASA.</a></div>
PIA01259: Hubble Views the Galileo Probe Entry Site on Jupiter
<h1>PIA01262: Hubble Tracks Jupiter Storms</h1><div class="PIA01262" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>NASA's Hubble Space Telescope is following dramatic and rapid changes in Jupiter's turbulent atmosphere that will be critical for targeting observations made by the Galileo space probe when it arrives at the giant planet later this year.<p>This Hubble image provides a detailed look at a unique cluster of three white oval-shaped storms that lie southwest (below and to the left) of Jupiter's Great Red Spot. The appearance of the clouds, as imaged on February 13, 1995 is considerably different from their appearance only seven months earlier. Hubble shows these features moving closer together as the Great Red Spot is carried westward by the prevailing winds while the white ovals are swept eastward. (This change in appearance is not an effect of last July's comet Shoemaker-Levy 9 collisions with Jupiter.)<p>The outer two of the white storms formed in the late 1930s. In the centers of these cloud systems the air is rising, carrying fresh ammonia gas upward. New, white ice crystals form when the upwelling gas freezes as it reaches the chilly cloud top level where temperatures are -200 degrees Fahrenheit (- 130 degrees Centigrade).<p>The intervening white storm center, the ropy structure to the left of the ovals, and the small brown spot have formed in low pressure cells. The white clouds sit above locations where gas is descending to lower, warmer regions. The extent of melting of the white ice exposes varied amounts of Jupiter's ubiquitous brown haze. The stronger the down flow, the less ice, and the browner the region.<p>A scheduled series of Hubble observations will help target regions of interest for detailed scrutiny by the Galileo spacecraft, which will arrive at Jupiter in early December 1995. Hubble will provide a global view of Jupiter while Galileo will obtain close-up images of structure of the clouds that make up the large storm systems such as the Great Red Spot and white ovals that are seen in this picture.<p>This color picture is assembled from a series of images taken by the Wide Field Planetary Camera 2, in planetary camera mode, when Jupiter was at a distance of 519 million miles (961 million kilometers) from Earth. These images are part of a set of data obtained by a Hubble Space Telescope (HST) team headed by Reta Beebe of New Mexico State University.<p>This image and other images and data received from the Hubble Space Telescope are posted on the World Wide Web on the Space Telescope Science Institute home page at URL <a href="http://oposite.stsci.edu/" class="external free" target="wpext">http://oposite.stsci.edu/</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01262" onclick="window.open(this.href); return false;" title="Voir l'image PIA01262: Hubble Tracks Jupiter Storms sur le site de la NASA">Voir l'image PIA01262: Hubble Tracks Jupiter Storms sur le site de la NASA.</a></div>
PIA01262: Hubble Tracks Jupiter Storms
<h1>PIA01263: Jupiter G Impact Evolution</h1><div class="PIA01263" lang="en" style="width:750px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This mosaic of WFPC-2 images shows the evolution of the Shoemaker-Levy 9 G impact site on Jupiter. The images from lower left to upper right show: the impact plume at 07/18/94 07:38 UT (about 5 minutes after the impact); the fresh impact site at 07/18/94 at 09:19 UT (1.5 hours after impact); the impact site after evolution by the winds of Jupiter (left), along with the L impact (right), taken on 07/21/94 at 6:22 UT (3 days after the G impact and 1.3 days after the L impact); and further evolution of the G and L sites due to winds and an additional impact (S) in the G vicinity, taken on 07/23/94 at 08:08 UT (5 days after the G impact).<p>This image and other images and data received from the Hubble Space Telescope are posted on the World Wide Web on the Space Telescope Science Institute home page at URL <a href="http://oposite.stsci.edu/" class="external free" target="wpext">http://oposite.stsci.edu/</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01263" onclick="window.open(this.href); return false;" title="Voir l'image PIA01263: Jupiter G Impact Evolution sur le site de la NASA">Voir l'image PIA01263: Jupiter G Impact Evolution sur le site de la NASA.</a></div>
PIA01263: Jupiter G Impact Evolution
<h1>PIA01264: Evolution of the P/Shoemaker-Levy 9 "Gang of Four" Region</h1><div class="PIA01264" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This series of eight NASA Hubble Space Telescope "snapshots" shows the evolution of the P-Q complex, also called the "gang of four" region, of comet P/Shoemaker-Levy 9.<p>The eight individual frames chronicle changes in the comet during the 12 months before colliding with Jupiter. The sequence shows that the relative separations of the various cometary fragments, thought to range in size from about 500 meters to almost 4 km (2.5 miles) across, changed dramatically over this period. The apparent separation of Q1 and Q2 was only about 1100 kilometers (680 miles) on 1 July 1993 and increased to 28,000 kilometers (17,400 miles) by 20 July 1994.<p>The P-Q complex demonstrates that further fragmentation occurred after the breakup of the parent body in July 1992. Fragments Q1 and Q2 were probably together at some point in a single body. However, it is not clear how P1 and P2, and the P and Q objects are related.<p>Between 24 January and 30 March 1994, the P2 nucleus broke-up into two separate fragments, one of which disappeared by late June. (It might be present in the mid-May image.) The P1 nucleus had a "streaked" appearance on 24 January 1994 and then became a barely discernible "puff" through mid-May. It was not detected in subsequent observations.<p>Throughout the period, most nuclei were within a 4000 kilometer-wide (2500 miles) spherical cloud of dust, called a coma. However, shortly before impact, the coma around each nucleus became highly elongated along the comet's travel path due to "stretching" by Jupiter's rapidly increasing gravity.<p>This stretching is dramatic in the image of the Q-complex taken on 20 July 1994, just 10 hours before collision. Despite the coma's changes, HST images show that the core of each nucleus always remained concentrated. This shows that the nuclei were probably not catastrophically fragmenting, at least not up to 10 hours before impact.<p>The first HST image was taken on 1 July 1993 with the Planetary Camera before the December 1993 HST servicing mission. All other images were taken with the WFPC-2. (The image taken on 17 May 1994 was taken in "wide-field" mode and has a lower resolution than the other WFPC-2 images). The images were taken in visible light. The different shades of red are a false-color representation of the different intensities of light reflecting off the comet's dust. Each frame covers a region 90,000 by 30,000 kilometers (56,000 by 18,600 miles).<p>This image and other images and data received from the Hubble Space Telescope are posted on the World Wide Web on the Space Telescope Science Institute home page at URL <a href="http://oposite.stsci.edu/" class="external free" target="wpext">http://oposite.stsci.edu/</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01264" onclick="window.open(this.href); return false;" title="Voir l'image PIA01264: Evolution of the P/Shoemaker-Levy 9 "Gang of Four" Region sur le site de la NASA">Voir l'image PIA01264: Evolution of the P/Shoemaker-Levy 9 "Gang of Four" Region sur le site de la NASA.</a></div>
PIA01264: Evolution of the P/Shoemaker-Levy 9 "Gang of Four" Region
<h1>PIA01265: Month-long Evolution of the D/G Jupiter Impact Sites from Comet P/Shoemaker-Levy 9</h1><div class="PIA01265" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This series of snapshots, taken with NASA's Hubble Space Telescope, shows evolution of the comet P/Shoemaker-Levy 9 impact region called the D/G complex. This feature was produced by two nuclei of comet P/Shoemaker-Levy 9 that collided with Jupiter on 17 and 18 July 1994, respectively, and was later modified again by the impact of the S fragment on 21 July 1994.<p>Upper Left: This first image was taken about 90 minutes after the G impact on 18 July 1994. Nearly all of the structure in this image was created by the impact of fragment G, although a small dark spot to the left was the remainder of small fragment D that collided one day earlier. The explosion of the nucleus in Jupiter's atmosphere created the unique ring structure, which may be analogous to a "sonic boom" on Earth. Though this structure is best seen for the G impact, it is not unique. Hubble reveals similar rings around several other fresh impact sites. They are all clear evidence for coherent outward motion of this wave phenomena.<p>Upper right: This second image, obtained on 23 July, shows that the Jovian winds have swept the material into a striking "curly-cue" structure.<p>Lower left, right: The structure seen in earlier views has disappeared rapidly in the images taken on 30 July and 24 August, respectively. Almost all of the changes between the images are due to Jupiter's east-west winds that play a key role in the dispersing of the dark material.<p>Hubble Space Telescope's high resolution will allow astronomers to continue to trace the impact debris as it is transported by the Jovian winds. This information promises to advance current understanding of the physics of Jupiter's atmosphere.<p>These black and white images were taken in near-ultraviolet light with the Wide Field Planetary Camera 2. They have been processed to correct for the curvature of Jupiter, so that the impact region appears flat, as if the viewer were hovering directly overhead. Each image is centered on -46 degrees latitude and 28 degrees. The north-south extent in the image spans from -26 to -66 deg. latitude and the east-west extent of the region spans +/- 30 degrees on either side of 28 degrees longitude.<p>This image and other images and data received from the Hubble Space Telescope are posted on the World Wide Web on the Space Telescope Science Institute home page at URL <a href="http://oposite.stsci.edu/" class="external free" target="wpext">http://oposite.stsci.edu/</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01265" onclick="window.open(this.href); return false;" title="Voir l'image PIA01265: Month-long Evolution of the D/G Jupiter Impact Sites from Comet P/Shoemaker-Levy 9 sur le site de la NASA">Voir l'image PIA01265: Month-long Evolution of the D/G Jupiter Impact Sites from Comet P/Shoemaker-Levy 9 sur le site de la NASA.</a></div>
PIA01265: Month-long Evolution of the D/G Jupiter Impact Sites from Comet P/Shoemaker-Levy 9
<h1>PIA01266: Jupiter's Upper Atmospheric Winds Revealed in Ultraviolet Images by Hubble Telescope</h1><div class="PIA01266" lang="en" style="width:600px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>These four NASA Hubble Space Telescope images of Jupiter, as seen in visible (violet) and far-ultraviolet (UV) wavelengths, show the remarkable spreading of the clouds of smoke and dust thrown into the atmosphere after the impacts of the fragments of comet P/Shoemaker-Levy 9. These dark regions provide the only information ever obtained on the wind direction and speed in Jupiter's upper atmosphere.<p>TOP Three impact sites appear as dark smudges lined up along Jupiter's southern hemisphere (from left to right, sites C, A, and E). This pair of images was obtained on 17 July, several hours after the E impact. These 3 impact sites appear strikingly darker in the far-ultraviolet images to the right. This is because the smoke and dust rising from the fireballs absorbs UV light more strongly than violet light, so that the clouds appear both darker and larger in the UV images. Apparently, the fireball and plume threw large amounts of material completely above the atmosphere. This material diffused back down through the atmosphere with the smaller and lighter particles suspended at high altitudes.<p>BOTTOM Hubble's view of the same hemisphere of Jupiter 12-13 days later shows that the smoke and dust have now been spread mainly in the east/west direction by the prevailing winds at the altitude where the dark material is suspended or "floating" in the atmosphere.<p>HST shows that winds in Jupiter's upper atmosphere carry the high altitude smoke and dust in different directions than in the lower atmosphere. For example, the UV image shows a fainter cloud near 45 deg. south latitude, which does not appear in the violet image. The fainter cloud may be due to high altitude material which is drifting with the upper atmospheric winds to the north away from the polar regions. However, in the left-hand impact regions the clouds being observed are lower in the atmosphere where there is apparently no such northerly wind.<p>The violet images show the Great Red Spot, on the eastern (right) limb, one of Jupiter's moons crossing in front of the planet in the northern hemisphere (and its shadow on Jupiter's clouds on the left-hand side in the lower image), and the dark clouds above 3 of the impact sites near 45 deg. south latitude. In addition, Jupiter's polar aurora can also be seen in the far-ultraviolet images near both northern and southern poles.<p>The images were taken with the Wide Field Planetary Camera-2.<p>This image and other images and data received from the Hubble Space Telescope are posted on the World Wide Web on the Space Telescope Science Institute home page at URL <a href="http://oposite.stsci.edu/" class="external free" target="wpext">http://oposite.stsci.edu/</a>.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01266" onclick="window.open(this.href); return false;" title="Voir l'image PIA01266: Jupiter's Upper Atmospheric Winds Revealed in Ultraviolet Images by Hubble Telescope sur le site de la NASA">Voir l'image PIA01266: Jupiter's Upper Atmospheric Winds Revealed in Ultraviolet Images by Hubble Telescope sur le site de la NASA.</a></div>
PIA01266: Jupiter's Upper Atmospheric Winds Revealed in Ultraviolet Images by Hubble Telescope
<h1>PIA01324: Jupiter</h1><div class="PIA01324" lang="en" style="width:600px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This crescent view of Jupiter was taken by Voyager 1 on March 24, 1979. This image was taken through three color filters and recombined to produce the color image. This photo was assembled from three black and white negatives by the Image Processing Lab at Jet Propulsion Laboratory. JPL manages and controls the Voyager project for NASA's Office of Space Science.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01324" onclick="window.open(this.href); return false;" title="Voir l'image PIA01324: Jupiter sur le site de la NASA">Voir l'image PIA01324: Jupiter sur le site de la NASA.</a></div>
PIA01324: Jupiter
<h1>PIA01353: Jupiter</h1><div class="PIA01353" lang="en" style="width:400px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This is a view of Jupiter taken by Voyager 1. This image was taken through three color filters and recombined to produce the color image. This photo was assembled from three black and white negatives by the Image Processing Lab at Jet Propulsion Laboratory. JPL manages and controls the Voyager project for NASA's Office of Space Science.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01353" onclick="window.open(this.href); return false;" title="Voir l'image PIA01353: Jupiter sur le site de la NASA">Voir l'image PIA01353: Jupiter sur le site de la NASA.</a></div>
PIA01353: Jupiter
<h1>PIA01369: Jupiter from Voyager 2</h1><div class="PIA01369" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This image was obtained on June 29, 1979, when Voyager 2 was 9.3 million kilometers (5.6 million miles) from the planet. The view extends from +40 to -40 latitude with size of the smallest discernable features equal to 172 kilometers (106 miles). The broad, orange band extending across the lower half of the picture is the equatorial region of the planet. All brown and white oval-shaped clouds visible in this image were observed by Voyager 1 in early March, illustrating the stability of this type of feature in the Jovian atmosphere. The turbulent region in the lower right-hand corner lies to the west of the Great Red Spot. High velocity westward winds along the southern edge combine with eastern winds along the northern edge to produce the observed effect. These individual features are short-lived.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01369" onclick="window.open(this.href); return false;" title="Voir l'image PIA01369: Jupiter from Voyager 2 sur le site de la NASA">Voir l'image PIA01369: Jupiter from Voyager 2 sur le site de la NASA.</a></div>
PIA01369: Jupiter from Voyager 2
<h1>PIA01370: Jupiter's Great Red spot</h1><div class="PIA01370" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">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. To the lower left of the Red Spot lies one of the three long-lived White Ovals. This photograph was taken on June 29, 1979, when Voyager 2 was over 9 million kilometers (nearly 6 million miles) from Jupiter. The smallest features visible are over 170 kilometers (106 miles) across.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01370" onclick="window.open(this.href); return false;" title="Voir l'image PIA01370: Jupiter's Great Red spot sur le site de la NASA">Voir l'image PIA01370: Jupiter's Great Red spot sur le site de la NASA.</a></div>
PIA01370: Jupiter's Great Red spot
<h1>PIA01371: Voyager picture of Jupiter</h1><div class="PIA01371" lang="en" style="width:400px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">NASA's Voyager 1 took this picture of the planet Jupiter on Saturday, Jan. 6, the first in its three-month-long, close-up investigation of the largest planet. The spacecraft, flying toward a March 5 closest approach, was 35.8 million miles (57.6 million kilometers) from Jupiter and 371.7 million miles (598.2 million kilometers) from Earth when the picture was taken. As the Voyager cameras begin their meteorological surveillance of Jupiter, they reveal a dynamic atmosphere with more convective structure than had previously been thought. While the smallest atmospheric features seen in this picture are still as large as 600 miles (1,000 kilometers) across, Voyager will be able to detect individual storm systems as small as 3 miles (5 kilometers) at closest approach. The Great Red Spot can be seen near the limb at the far right. Most of the other features are too small to be seen in terrestrial telescopes. This picture was transmitted to the Jet Propulsion Laboratory through the Deep Space Network's tracking station at Madrid, Spain. The Voyager Project is managed for NASA by Caltech's Jet Propulsion Laboratory.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01371" onclick="window.open(this.href); return false;" title="Voir l'image PIA01371: Voyager picture of Jupiter sur le site de la NASA">Voir l'image PIA01371: Voyager picture of Jupiter sur le site de la NASA.</a></div>
PIA01371: Voyager picture of Jupiter
<h1>PIA01477: Jupiter's White Ovals</h1><div class="PIA01477" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>These images show a newly created large-scale storm on Jupiter, known as a white oval. This storm is the size of Earth and was observed by the Hubble Space Telescope and the Galileo spacecraft's photopolarimeter radiometer in July 1998. The color composite image shown in the upper panel was taken by the Hubble Space Telescope's Wide-Field/Planetary Camera on July 16, 1998. The image in the lower panel was created from data taken by Galileo's photopolarimeter experiment on July 20, 1998, and it is sensitive to Jupiter's atmospheric temperatures.<p>The white oval is believed to be the result of a merger between two smaller, 50-year-old ovals sometime in February, 1998. This white oval may be the strongest storm in the solar system outside Jupiter's 200-year old Great Red Spot. The Galileo spacecraft's measurements of the temperature field show that the feature is distinctly colder than its surroundings, as would be expected from rapidly upwelling winds in the center of the feature, and this temperature difference is at least as large as that of the two former white ovals. The temperature measurements also show that the feature to the left of the new white oval, once distinctly warmer that its surroundings (as expected of downdrafts) has cooled off.<p>More images and information on the Galileo mission are available on the Internet at http://galileo.jpl.nasa.gov .<p>The Hubble Space Telescope image is courtesy of Amy Simon and Reta Beebe, New Mexico State University, and the Space Telescope Science Institute.<p>The Jet Propulsion Laboratory, Pasadena, CA manages the Galileo mission for NASA's Office of Space Science, Washington, DC.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01477" onclick="window.open(this.href); return false;" title="Voir l'image PIA01477: Jupiter's White Ovals sur le site de la NASA">Voir l'image PIA01477: Jupiter's White Ovals sur le site de la NASA.</a></div>
PIA01477: Jupiter's White Ovals
<h1>PIA01509: Jupiter Full Disk with Great Red Spot</h1><div class="PIA01509" lang="en" style="width:400px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This recent photo of Jupiter taken by the television cameras aboard NASA's Voyager 1 is dominated by the Great Red Spot. Although the spacecraft is still 34 million miles (54 million kilometers) from a March 5 closest approach, Voyager's cameras already reveal details within the spot that aren't visible from Earth. An atmospheric system larger than Earth and more than 300 years old, the Great Red Spot remains a mystery and a challenge to Voyager's instruments. Swirling, storm-like features possibly associated with wind shear can be seen both to the left and above the Red Spot. Analysis of motions of the features will lead to a better understanding of weather in Jupiter's atmosphere. This photo was taken Jan. 9, 1979 and reassembled at Jet Propulsion Laboratory's Image Processing Laboratory. JPL manages the Voyager project for NASA.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01509" onclick="window.open(this.href); return false;" title="Voir l'image PIA01509: Jupiter Full Disk with Great Red Spot sur le site de la NASA">Voir l'image PIA01509: Jupiter Full Disk with Great Red Spot sur le site de la NASA.</a></div>
PIA01509: Jupiter Full Disk with Great Red Spot
<h1>PIA01512: Jupiter's Great Red Spot and White Ovals</h1><div class="PIA01512" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This photo of Jupiter was taken by Voyager 1 on the evening of March 1, 1979, from a distance of 2.7 million miles (4.3 million kilometers). The photo shows Jupiter's Great Red Spot (top) and one of the white ovals than can be seen in Jupiter's atmosphere from Earth. The white ovals were seen to form in 1939, and 1940, and have remained more or less constant ever since. None of the structure and detail evident in these features have ever been seen from Earth. The Great Red Spot is three times as large as Earth. Also evident in the picture is a great deal of atmospheric detail that will require further study for interpretation. The smallest details that can be seen in this picture are about 45 miles (80 kilometers~ across. JPL manages and controls the Voyager project for NASA's Office of Space Science.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01512" onclick="window.open(this.href); return false;" title="Voir l'image PIA01512: Jupiter's Great Red Spot and White Ovals sur le site de la NASA">Voir l'image PIA01512: Jupiter's Great Red Spot and White Ovals sur le site de la NASA.</a></div>
PIA01512: Jupiter's Great Red Spot and White Ovals
<h1>PIA01513: Jupiter - Southeast of Great Red Spot</h1><div class="PIA01513" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This photo of Jupiter was taken by Voyager 1 on March 1, 1979, from a distance of 2.7 million miles (4.3 million kilometers). 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 45 miles (80 kilometers) across. JPL manages and controls the Voyager project for NASA's Office of Space Science.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01513" onclick="window.open(this.href); return false;" title="Voir l'image PIA01513: Jupiter - Southeast of Great Red Spot sur le site de la NASA">Voir l'image PIA01513: Jupiter - Southeast of Great Red Spot sur le site de la NASA.</a></div>
PIA01513: Jupiter - Southeast of Great Red Spot
<h1>PIA01518: Jupiter Plume</h1><div class="PIA01518" lang="en" style="width:581px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">Reconstruction of a plume on Jupiter, photographed on March 1, 1979. JPL manages and controls the Voyager project for NASA s Office of Space Science.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01518" onclick="window.open(this.href); return false;" title="Voir l'image PIA01518: Jupiter Plume sur le site de la NASA">Voir l'image PIA01518: Jupiter Plume sur le site de la NASA.</a></div>
PIA01518: Jupiter Plume
<h1>PIA01519: Disturbed Region West of the Great Red Spot</h1><div class="PIA01519" lang="en" style="width:487px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This photo from Voyager 2 was taken on June 9, 1979 and is centered over the long-lived disturbed region west of the Great Red Spot (GRS). Note that the White Oval to the lower left of the GRS has a similar chaotic region of clouds to its west. This particular White Oval, which is not the same one as that seen below the GRS by Voyager 1 in March, 1979, is moving to the right relative to the Red Spot. By the time of Voyager 2's closest approach to Jupiter on July 9, 1979 this Oval will lie just south of the Red Spot. At the time this composite was taken the spacecraft was over 24 million kilometers (15 million miles) from Jupiter. The smallest features which can be seen are roughly 450 kilometers (280 miles) across.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01519" onclick="window.open(this.href); return false;" title="Voir l'image PIA01519: Disturbed Region West of the Great Red Spot sur le site de la NASA">Voir l'image PIA01519: Disturbed Region West of the Great Red Spot sur le site de la NASA.</a></div>
PIA01519: Disturbed Region West of the Great Red Spot
<h1>PIA01521: Jupiter White Oval</h1><div class="PIA01521" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;">This image shows one of the long-lived white oval clouds which have resided in the Jovian southern hemisphere for nearly 40 years. This cloud that is at a longitude west of the Great Red Spot. All of the clouds show very similar internal structures. To the east of each of them, recirculating currents are clearly seen. This photo was taken on July 5 by Voyager 2 from a distance of 3.4 million kilometers.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA01521" onclick="window.open(this.href); return false;" title="Voir l'image PIA01521: Jupiter White Oval sur le site de la NASA">Voir l'image PIA01521: Jupiter White Oval sur le site de la NASA.</a></div>
PIA01521: Jupiter White Oval