Galerie de photos de la planète Jupiter

<h1>PIA09243: Full Jupiter Mosaic</h1><div class="PIA09243" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This image of Jupiter is produced from a 2x2 mosaic of photos taken by the New Horizons Long Range Reconnaissance Imager (LORRI), and assembled by the LORRI team at the Johns Hopkins University Applied Physics Laboratory. The telescopic camera snapped the images during a 3-minute, 35-second span on February 10, when the spacecraft was 29 million kilometers (18 million miles) from Jupiter. At this distance, Jupiter's diameter was 1,015 LORRI pixels -- nearly filling the imager's entire (1,024-by-1,024 pixel) field of view. Features as small as 290 kilometers (180 miles) are visible.</p><p>Both the Great Red Spot and Little Red Spot are visible in the image, on the left and lower right, respectively. The apparent "storm" on the planet's right limb is a section of the south tropical zone that has been detached from the region to its west (or left) by a "disturbance" that scientists and amateur astronomers are watching closely.</p><p>At the time LORRI took these images, New Horizons was 820 million kilometers (510 million miles) from home -- nearly 5½ times the distance between the Sun and Earth. This is the last full-disk image of Jupiter LORRI will produce, since Jupiter is appearing larger as New Horizons draws closer, and the imager will start to focus on specific areas of the planet for higher-resolution studies.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09243" onclick="window.open(this.href); return false;" title="Voir l'image PIA09243: Full Jupiter Mosaic sur le site de la NASA">Voir l'image PIA09243: Full Jupiter Mosaic sur le site de la NASA.</a></div>
PIA09243: Full Jupiter Mosaic
<h1>PIA09247: The Little Red Spot: Closest View Yet</h1><div class="PIA09247" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This is a mosaic of three New Horizons images of Jupiter's Little Red Spot, taken with the spacecraft's Long Range Reconnaissance Imager (LORRI) camera at 17:41 Universal Time on February 26 from a range of 3.5 million kilometers (2.1 million miles). The image scale is 17 kilometers (11 miles) per pixel, and the area covered measures 33,000 kilometers (20,000 miles) from top to bottom, two and one-half times the diameter of Earth. </p><p>The Little Red Spot, a smaller cousin of the famous Great Red Spot, formed in the past decade from the merger of three smaller Jovian storms, and is now the second-largest storm on Jupiter. About a year ago its color, formerly white, changed to a reddish shade similar to the Great Red Spot, perhaps because it is now powerful enough to dredge up reddish material from deeper inside Jupiter. These are the most detailed images ever taken of the Little Red Spot since its formation, and will be combined with even sharper images taken by New Horizons 10 hours later to map circulation patterns around and within the storm. </p><p>LORRI took the images as the Sun was about to set on the Little Red Spot. The LORRI camera was designed to look at Pluto, where sunlight is much fainter than it is at Jupiter, so the images would have been overexposed if LORRI had looked at the storm when it was illuminated by the noonday Sun. The dim evening illumination helped the LORRI camera obtain well-exposed images. The New Horizons team used predictions made by amateur astronomers in 2006, based on their observations of the motion of the Little Red Spot with backyard telescopes, to help them accurately point LORRI at the storm. </p><p>These are among a handful of Jupiter system images already returned by New Horizons during its close approach to Jupiter. Most of the data being gathered by the spacecraft are stored onboard and will be downlinked to Earth during March and April 2007. </p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09247" onclick="window.open(this.href); return false;" title="Voir l'image PIA09247: The Little Red Spot: Closest View Yet sur le site de la NASA">Voir l'image PIA09247: The Little Red Spot: Closest View Yet sur le site de la NASA.</a></div>
PIA09247: The Little Red Spot: Closest View Yet
<h1>PIA09251: A Look from LEISA</h1><div class="PIA09251" lang="en" style="width:792px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p><a href="/figures/PIA09251_fig1.jpg"></a><br />Annotated Version</p><p>On February 24, 2007, the LEISA (pronounced "Leesa") infrared spectral imager in the New Horizons Ralph instrument observed giant Jupiter in 250 narrow spectral channels. At the time the spacecraft was 6 million kilometers (nearly 4 million miles) from Jupiter; at that range, the LEISA imager can resolve structures about 400 kilometers (250 miles) across. </p><p>LEISA observes in 250 infrared wavelengths, which range from 1.25 micrometers (µm) to 2.50 µm. The three images shown above from that dataset are at wavelengths of 1.27 µm (left), 1.53 µm (center) and 1.88 µm (right). </p><p>The bright areas in the image frames are caused by solar radiation reflected from clouds and hazes in Jupiter's atmosphere. Dark areas correspond to atmospheric regions where solar radiation is absorbed before it can be reflected. The dark circular feature in the upper left of all three images is the shadow of Jupiter's innermost large moon, Io. </p><p>Light at 1.53 µm (center frame) comes from relatively high in the atmosphere. The other two channels probe deeper atmospheric levels. Features that are bright in all three pictures come from high-altitude clouds. Features that are bright in the 1.27 and 1.88 µm channels, but darker in the 1.53-µm channel come from lower clouds. For example, there is an isolated circular feature (the "Little Red Spot") in the lower left of the 1.53-µm image. In the 1.27 and 1.88 µm data, this circular feature is surrounded by other structures. The implication is that the "Little Red Spot" is caused by a system that extends far up into the atmosphere, while other structures are lower. </p><p>At closest approach to Jupiter on February 28, at a distance of about 2.5 million kilometers (1.4 million miles), LEISA's resolution was about three times better than it was on February 24. LEISA images made at that far-better resolution are still stored in the spacecraft's data recorder, awaiting downlink from New Horizons. </p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09251" onclick="window.open(this.href); return false;" title="Voir l'image PIA09251: A Look from LEISA sur le site de la NASA">Voir l'image PIA09251: A Look from LEISA sur le site de la NASA.</a></div>
PIA09251: A Look from LEISA
<h1>PIA09252: Alice Views Jupiter and Io</h1><div class="PIA09252" lang="en" style="width:736px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This graphic illustrates the pointing and shows the data from one of many observations made by the New Horizons Alice ultraviolet spectrometer (UVS) instrument during the Pluto-bound spacecraft's recent encounter with Jupiter. The red lines in the graphic show the scale, orientation, and position of the combined "box and slot" field of view of the Alice UVS during this observation. </p><p>The positions of Jupiter's volcanic moon, Io, the torus of ionized gas from Io, and Jupiter are shown relative to the Alice field of view. Like a prism, the spectrometer separates light from these targets into its constituent wavelengths.</p><p>Io's volcanoes produce an extremely tenuous atmosphere made up primarily of sulfur dioxide gas, which, in the harsh plasma environment at Io, breaks down into its component sulfur and oxygen atoms. Alice observed the auroral glow from these atoms in Io's atmosphere and their ionized counterparts in the Io torus.</p><p>Io's dayside is deliberately overexposed to bring out faint details in the plumes and on the moon's night side. The continuing eruption of the volcano Tvashtar, at the 1 o'clock position, produces an enormous plume roughly 330 kilometers (200 miles) high, which is illuminated both by sunlight and "Jupiter light." </p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09252" onclick="window.open(this.href); return false;" title="Voir l'image PIA09252: Alice Views Jupiter and Io sur le site de la NASA">Voir l'image PIA09252: Alice Views Jupiter and Io sur le site de la NASA.</a></div>
PIA09252: Alice Views Jupiter and Io
<h1>PIA09253: LORRI Takes an Even Closer Look at the Little Red Spot</h1><div class="PIA09253" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>LORRI took this mosaic 9½ hours -- or not quite one Jupiter rotation period -- after snapping its previous images of the Little Red Spot on Feb 26, 2007 (see <a href="/catalog/PIA09249">PIA09294</a>), at a longer range of 3.5 million kilometers (2.2 million miles) and at a lower resolution of 17 kilometers (10.5 miles) per pixel. The new mosaic was obtained with the Little Red Spot closer to the center of the visible disk of Jupiter, so there is less foreshortening and better illumination. </p><p>The Little Red Spot is an Earth-sized storm on Jupiter that changed its color from white to red in 2005. Swimming to the east, its clouds rotate counterclockwise (or in the anticyclonic direction), meaning that it is a high-pressure region. In that sense, the Little Red Spot is the opposite of a hurricane on Earth, which is a low-pressure region - and it is of course much larger than any hurricane on Earth.</p><p>Scientists don't know exactly how or why the storm turned red -- though they speculate that the change could stem from a surge of exotic compounds from deep within Jupiter, caused by an intensification of the storm system. In particular, sulfur-bearing cloud droplets might have been propelled about 50 kilometers into the upper level of ammonia clouds, where brighter sunlight bathing the cloud tops released the red-hued sulfur embedded in the droplets - causing the storm to turn red. A similar mechanism has been proposed for the Little Red Spot's "big brother," the Great Red Spot, a massive energetic storm system that has existed for centuries.</p><p>The smaller, brighter oval to the south of the Little Red Spot is another storm moving more rapidly to the east, as can be seen by comparing the previous mosaic to the newer one. Any feature that moved by as much as 100 pixels between the earlier mosaic and the new one -- as many features have done -- has shifted at an average relative speed faster than 95 miles per hour, indicating hurricane force winds. The awesome violence of the storms in Jupiter's atmosphere contrasts with the serene isolation of New Horizons' LORRI, snapping pictures from millions of miles away.</p><p>"The new images are further proof that LORRI is one of the best imagers ever flown on a planetary mission," says Dr. Andy Cheng, the LORRI principal investigator from the Applied Physics Laboratory, "and more delights are yet to come."</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09253" onclick="window.open(this.href); return false;" title="Voir l'image PIA09253: LORRI Takes an Even Closer Look at the Little Red Spot sur le site de la NASA">Voir l'image PIA09253: LORRI Takes an Even Closer Look at the Little Red Spot sur le site de la NASA.</a></div>
PIA09253: LORRI Takes an Even Closer Look at the Little Red Spot
<h1>PIA09255: Storm Spectra</h1><div class="PIA09255" lang="en" style="width:550px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>These images, taken with the LEISA infrared camera on the New Horizons Ralph instrument, show fine details in Jupiter's turbulent atmosphere using light that can only be seen using infrared sensors. These are "false color" pictures made by assigning infrared wavelengths to the colors red, green and blue. LEISA (Linear Etalon Imaging Spectral Array) takes images across 250 IR wavelengths in the range from 1.25 to 2.5 microns, allowing scientists to obtain an infrared spectrum at every location on Jupiter. A micron is one millionth of a meter. </p><p>These pictures were taken at 05:58 UT on February 27, 2007, from a distance of 2.9 million kilometers (1.6 million miles). They are centered at 8 degrees south, 32 degrees east in Jupiter "System III" coordinates. The large oval-shaped feature is the well-known Great Red Spot. The resolution of each pixel in these images is about 175 kilometers (110 miles); Jupiter's diameter is approximately 145,000 kilometers (97,000 miles). </p><p>The image on the left is an altitude map made by assigning the color red to 1.60 microns, green to 1.89 microns and blue to 2.04 microns. Because Jupiter's atmosphere absorbs light strongly at 2.04 microns, only clouds at very high altitude will reflect light at this wavelength. Light at 1.89 microns can go deeper in the atmosphere and light at 1.6 microns can go deeper still. In this map, bluish colors indicate high clouds and reddish colors indicate lower clouds. This picture shows, for example, that the Great Red Spot extends far up into the atmosphere.</p><p>In the image at right, red equals 1.28 microns, green equals 1.30 microns and blue equals 1.36 microns, a range of wavelengths that similarly probes different altitudes in the atmosphere. This choice of wavelengths highlights Jupiter's high-altitude south polar hood of haze. The edge of Jupiter's disk at the bottom of the panel appears slightly non-circular because the left-hand portion is the true edge of the disk, while the right portion is defined by the day/night boundary (known as the terminator).</p><p>These two images illustrate only a small fraction of the information contained in a single LEISA scan, highlighting just one aspect of the power of infrared spectra for atmospheric studies.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09255" onclick="window.open(this.href); return false;" title="Voir l'image PIA09255: Storm Spectra sur le site de la NASA">Voir l'image PIA09255: Storm Spectra sur le site de la NASA.</a></div>
PIA09255: Storm Spectra
<h1>PIA09339: Jupiter's High-Altitude Clouds</h1><div class="PIA09339" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>The New Horizons Multispectral Visible Imaging Camera (MVIC) snapped this incredibly detailed picture of Jupiter's high-altitude clouds starting at 06:00 Universal Time on February 28, 2007, when the spacecraft was only 2.3 million kilometers (1.4 million miles) from the solar system's largest planet. Features as small as 50 kilometers (30 miles) are visible. The image was taken through a narrow filter centered on a methane absorption band near 890 nanometers, a considerably redder wavelength than what the eye can see. Images taken through this filter preferentially pick out clouds that are relatively high in the sky of this gas giant planet because sunlight at the wavelengths transmitted by the filter is completely absorbed by the methane gas that permeates Jupiter's atmosphere before it can reach the lower clouds.</p><p>The image reveals a range of diverse features. The south pole is capped with a haze of small particles probably created by the precipitation of charged particles into the polar regions during auroral activity. Just north of the cap is a well-formed anticyclonic vortex with rising white thunderheads at its core. Slightly north of the vortex are the tendrils of some rather disorganized storms and more pinpoint-like thunderheads. The dark "measles" that appear a bit farther north are actually cloud-free regions where light is completely absorbed by the methane gas and essentially disappears from view. The wind action considerably picks up in the equatorial regions where giant plumes are stretched into a long wave pattern. Proceeding north of the equator, cirrus-like clouds are shredded by winds reaching speeds of up to 400 miles per hour, and more pinpoint-like thunderheads are visible. Although some of the famous belt and zone structure of Jupiter's atmosphere is washed out when viewed at this wavelength, the relatively thin North Temperate Belt shows up quite nicely, as does a series of waves just north of the belt. The north polar region of Jupiter in this image has a mottled appearance, and the scene is not as dynamic as the equatorial and south polar regions.</p><p>The intricate structures revealed in this image are exciting, but they are only part of the story. The New Horizons instruments have taken images of Jupiter at approximately 260 different wavelengths, providing essentially a three-dimensional view of Jupiter's atmosphere, since images at different wavelengths probe different altitudes. New Horizons is providing a wealth of data on this fascinating planet during this last close-up view of Jupiter until the middle of the next decade.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09339" onclick="window.open(this.href); return false;" title="Voir l'image PIA09339: Jupiter's High-Altitude Clouds sur le site de la NASA">Voir l'image PIA09339: Jupiter's High-Altitude Clouds sur le site de la NASA.</a></div>
PIA09339: Jupiter's High-Altitude Clouds
<h1>PIA09341: Best Color Image of Jupiter's Little Red Spot</h1><div class="PIA09341" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This amazing color portrait of Jupiter's "Little Red Spot" (LRS) combines high-resolution images from the New Horizons Long Range Reconnaissance Imager (LORRI), taken at 03:12 UT on February 27, 2007, with color images taken nearly simultaneously by the Wide Field Planetary Camera 2 (WFPC2) on the Hubble Space Telescope. The LORRI images provide details as fine as 9 miles across (15 kilometers), which is approximately 10 times better than Hubble can provide on its own. The improved resolution is possible because New Horizons was only 1.9 million miles (3 million kilometers) away from Jupiter when LORRI snapped its pictures, while Hubble was more than 500 million miles (800 million kilometers) away from the Gas Giant planet.<p></p>The Little Red Spot is the second largest storm on Jupiter, roughly 70% the size of the Earth, and it started turning red in late-2005. The clouds in the Little Red Spot rotate counterclockwise, or in the anticyclonic direction, because it is a high-pressure region. In that sense, the Little Red Spot is the opposite of a hurricane on Earth, which is a low-pressure region - and, of course, the Little Red Spot is far larger than any hurricane on Earth.<p></p>Scientists don't know exactly how or why the Little Red Spot turned red, though they speculate that the change could stem from a surge of exotic compounds from deep within Jupiter, caused by an intensification of the storm system. In particular, sulfur-bearing cloud droplets might have been propelled about 50 kilometers into the upper level of ammonia clouds, where brighter sunlight bathing the cloud tops released the red-hued sulfur embedded in the droplets, causing the storm to turn red. A similar mechanism has been proposed for the Little Red Spot's "older brother," the Great Red Spot, a massive energetic storm system that has persisted for over a century. <p></p>New Horizons is providing an opportunity to examine an "infant" red storm system in detail, which may help scientists understand better how these giant weather patterns form and evolve.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09341" onclick="window.open(this.href); return false;" title="Voir l'image PIA09341: Best Color Image of Jupiter's Little Red Spot sur le site de la NASA">Voir l'image PIA09341: Best Color Image of Jupiter's Little Red Spot sur le site de la NASA.</a></div>
PIA09341: Best Color Image of Jupiter's Little Red Spot
<h1>PIA09921: Shepherd Moons</h1><div class="PIA09921" lang="en" style="width:494px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p><a href="/archive/PIA09921.gif"></a><br />Click on the image for movie of<br />Shepherd Moons</p><p>The New Horizons spacecraft took the best images of Jupiter's charcoal-black rings as it approached and then looked back at Jupiter in February 2007. This sequence of pictures from the Long Range Reconnaissance Imager (LORRI) shows the well-defined lanes of gravel- to boulder-sized material composing the bulk of the rings; labels point out how these narrow rings are confined in their orbits by small "shepherding" moons (Metis and Adrastea).</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09921" onclick="window.open(this.href); return false;" title="Voir l'image PIA09921: Shepherd Moons sur le site de la NASA">Voir l'image PIA09921: Shepherd Moons sur le site de la NASA.</a></div>
PIA09921: Shepherd Moons
<h1>PIA09922: Ammonia Clouds on Jupiter</h1><div class="PIA09922" lang="en" style="width:224px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p><a href="/archive/PIA09922.mov"></a><br />Click on the image for movie of<br /> Ammonia Ice Clouds on Jupiter</p><p>In this movie, put together from false-color images taken by the New Horizons Ralph instrument as the spacecraft flew past Jupiter in early 2007, show ammonia clouds (appearing as bright blue areas) as they form and disperse over five successive Jupiter "days." Scientists noted how the larger cloud travels along with a small, local deep hole.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA09922" onclick="window.open(this.href); return false;" title="Voir l'image PIA09922: Ammonia Clouds on Jupiter sur le site de la NASA">Voir l'image PIA09922: Ammonia Clouds on Jupiter sur le site de la NASA.</a></div>
PIA09922: Ammonia Clouds on Jupiter
<h1>PIA10097: Atmospheric Waves</h1><div class="PIA10097" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>With its Multispectral Visible Imaging Camera (MVIC), half of the Ralph instrument, New Horizons captured several pictures of mesoscale gravity waves in Jupiter's equatorial atmosphere. Buoyancy waves of this type are seen frequently on Earth - for example, they can be caused when air flows over a mountain and a regular cloud pattern forms downstream. In Jupiter's case there are no mountains, but if conditions in the atmosphere are just right, it is possible to form long trains of these small waves. The source of the wave excitation seems to lie deep in Jupiter's atmosphere, below the visible cloud layers at depths corresponding to pressures 10 times that at Earth's surface. The New Horizons measurements showed that the waves move about 100 meters per second faster than surrounding clouds; this is about 25% of the speed of sound on Earth and is much greater than current models of these waves predict. Scientists can "read" the speed and patterns these waves to learn more about activity and stability in the atmospheric layers below.</p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10097" onclick="window.open(this.href); return false;" title="Voir l'image PIA10097: Atmospheric Waves sur le site de la NASA">Voir l'image PIA10097: Atmospheric Waves sur le site de la NASA.</a></div>
PIA10097: Atmospheric Waves
<h1>PIA10098: Atmospheric Structure</h1><div class="PIA10098" lang="en" style="width:495px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p>This is a composite of several images taken in several colors by the New Horizons Multispectral Visual Imaging Camera, or MVIC. It illustrates the remarkable diversity of structures in Jupiter's atmosphere, in colors similar to what someone "riding" on New Horizons would see. It was taken near the terminator, the boundary between day and night, and shows relatively small-scale, turbulent, whirlpool-like structures near the south pole of the planet. The dark "holes" in this region are actually places where there is very little cloud cover, so sunlight is not reflected back to the camera. Moving toward the equator, the atmospheric structures become more elongated in an east-west direction, taking on the familiar pattern of dark "belts" and light "zones." At the equator itself, a herringbone pattern of clouds known as "mesoscale waves" is apparent, especially near the edge of the terminator where the glancing angle of sunlight emphasizes the alternating dark and light North-South stripes. The energy to form these waves comes from deeper in Jupiter's atmosphere.</p><p>This picture provides a vivid illustration that Jupiter's atmosphere has more color contrast than any other atmosphere in the solar system, including Earth's. Data obtained from these and other New Horizons images taken during the encounter will provide valuable insight into the processes occurring on this gas giant. </p><br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10098" onclick="window.open(this.href); return false;" title="Voir l'image PIA10098: Atmospheric Structure sur le site de la NASA">Voir l'image PIA10098: Atmospheric Structure sur le site de la NASA.</a></div>
PIA10098: Atmospheric Structure
<h1>PIA10224: Jupiter Eruptions</h1><div class="PIA10224" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p><a href="/tiff/PIA10224_fig1.tif"></a><br />Click on the image for<br />high resolution image of<br />Nature Cover</p><p>Detailed analysis of two continent-sized storms that erupted in Jupiter's atmosphere in March 2007 shows that Jupiter's internal heat plays a significant role in generating atmospheric disturbances. Understanding these outbreaks could be the key to unlock the mysteries buried in the deep Jovian atmosphere, say astronomers. </p><p>This visible-light image is from NASA's Hubble Space Telescope taken on May 11, 2007. It shows the turbulent pattern generated by the two plumes on the upper left part of Jupiter. </p><p>Understanding these phenomena is important for Earth's meteorology where storms are present everywhere and jet streams dominate the atmospheric circulation. Jupiter is a natural laboratory where atmospheric scientists study the nature and interplay of the intense jets and severe atmospheric phenomena.</p><p>According to the analysis, the bright plumes were storm systems triggered in Jupiter's deep water clouds that moved upward in the atmosphere vigorously and injected a fresh mixture of ammonia ice and water about 20 miles (30 kilometers) above the visible clouds. The storms moved in the peak of a jet stream in Jupiter's atmosphere at 375 miles per hour (600 kilometers per hour). Models of the disturbance indicate that the jet stream extends deep in the buried atmosphere of Jupiter, more than 60 miles (approximately100 kilometers) below the cloud tops where most sunlight is absorbed.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10224" onclick="window.open(this.href); return false;" title="Voir l'image PIA10224: Jupiter Eruptions sur le site de la NASA">Voir l'image PIA10224: Jupiter Eruptions sur le site de la NASA.</a></div>
PIA10224: Jupiter Eruptions
PIA10224_fig1.jpg
PIA10224_fig1.jpg
<h1>PIA10225: Jupiter Eruptions Captured in Infrared</h1><div class="PIA10225" lang="en" style="width:800px;text-align:left;margin:auto;background-color:#000;padding:10px;max-height:150px;overflow:auto;"><p><a href="/tiff/PIA10224_fig1.tif"></a><br />Click on the image for<br />high resolution image of<br />Nature Cover</p><p>Detailed analysis of two continent-sized storms that erupted in Jupiter's atmosphere in March 2007 shows that Jupiter's internal heat plays a significant role in generating atmospheric disturbances. Understanding these outbreaks could be the key to unlock the mysteries buried in the deep Jovian atmosphere, say astronomers. </p><p>This infrared image shows two bright plume eruptions obtained by the NASA Infrared Telescope Facility on April 5, 2007.</p><p>Understanding these phenomena is important for Earth's meteorology where storms are present everywhere and jet streams dominate the atmospheric circulation. Jupiter is a natural laboratory where atmospheric scientists study the nature and interplay of the intense jets and severe atmospheric phenomena.</p><p>According to the analysis, the bright plumes were storm systems triggered in Jupiter's deep water clouds that moved upward in the atmosphere vigorously and injected a fresh mixture of ammonia ice and water about 20 miles (30 kilometers) above the visible clouds. The storms moved in the peak of a jet stream in Jupiter's atmosphere at 375 miles per hour (600 kilometers per hour). Models of the disturbance indicate that the jet stream extends deep in the buried atmosphere of Jupiter, more than 60 miles (approximately100 kilometers) below the cloud tops where most sunlight is absorbed.<br /><br /><a href="http://photojournal.jpl.nasa.gov/catalog/PIA10225" onclick="window.open(this.href); return false;" title="Voir l'image PIA10225: Jupiter Eruptions Captured in Infrared sur le site de la NASA">Voir l'image PIA10225: Jupiter Eruptions Captured in Infrared sur le site de la NASA.</a></div>
PIA10225: Jupiter Eruptions Captured in Infrared
Synthese_Jupiter.jpg
Synthese_Jupiter.jpg