{"id":1945,"date":"2025-08-15T17:17:31","date_gmt":"2025-08-15T14:17:31","guid":{"rendered":"https:\/\/planeta21vek.ru\/eng\/?p=1945"},"modified":"2025-11-20T12:37:53","modified_gmt":"2025-11-20T09:37:53","slug":"how-juno-explores-jupiter-and-its-moons","status":"publish","type":"post","link":"https:\/\/planeta21vek.ru\/eng\/2025\/08\/15\/how-juno-explores-jupiter-and-its-moons\/","title":{"rendered":"How Juno Explores Jupiter and Its Moons"},"content":{"rendered":"<p style=\"text-align: justify;\"><span dir=\"auto\">New data from the agency\u2019s Jupiter orbiter shed light on the fierce winds and cyclones of the gas giant\u2019s northern reaches, as well as volcanic activity on its fiery moon. NASA\u2019s Juno mission has obtained new data by peering beneath Jupiter\u2019s cloudy atmosphere and onto the surface of its fiery moon Io. The data not only helped develop a new model to better understand the fast-moving jet stream that sweeps across Jupiter\u2019s cyclone-strewn north pole, but also revealed for the first time the temperature profile beneath Io\u2019s surface, providing insight into the moon\u2019s interior and volcanic activity.<\/span><\/p>\n<p><!--more--><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">The team members presented the results of their research at a press conference in Vienna on 29 April 2025 at the General Assembly of the European Geosciences Union.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">\u201cJupiter is extreme. The planet is home to giant polar cyclones larger than Australia, powerful jet streams, the most volcanic body in our solar system, the most powerful auroras, and the most powerful radiation belts,\u201d said Scott Bolton, Juno\u2019s principal investigator at the Southwest Research Institute in San Antonio. \u201cAs Juno\u2019s orbit takes us into new parts of the complex Jupiter system, we are becoming increasingly familiar with the enormous energy reserves of this gas giant.\u201d<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">While Juno&#8217;s microwave radiometer (MWR) was designed to probe the regions beneath Jupiter&#8217;s cloud tops, the team also trained the instrument on Io, combining its data with data from Jupiter&#8217;s Jovian Infrared Auroral Mapper (JIRAM) for deeper insights.<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3548\" src=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/juno0808251.jpg\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" srcset=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/juno0808251.jpg 1536w, https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/juno0808251-300x158.jpg 300w, https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/juno0808251-1024x540.jpg 1024w, https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/juno0808251-768x405.jpg 768w\" alt=\"\" width=\"1536\" height=\"810\" \/><br \/>\n<em><span dir=\"auto\">JunoCam, the visible-light camera aboard NASA&#8217;s Juno spacecraft, captured this color-enhanced image of Jupiter&#8217;s northern high latitudes from about 36,000 miles (58,000 kilometers) above the giant planet&#8217;s cloud tops during the spacecraft&#8217;s 69th flyby on Jan. 28, 2025. NASA\/JPL-Caltech\/SwRI\/MSSS Image processing: Jackie Branch (CC BY)<\/span><\/em><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">\u201cThe Juno science team likes to combine many different data sets from many different instruments and see what we can learn,\u201d said Shannon Brown, a Juno scientist at NASA\u2019s Jet Propulsion Laboratory in Southern California. \u201cWhen we combined the MWR data with the JIRAM infrared images, we were surprised by what we saw: evidence of warm magma that had not yet cooled beneath Io\u2019s cooling crust. There were cooling lava flows at all latitudes and longitudes.\u201d<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">The data suggests that about 10 percent of Io&#8217;s surface contains the remains of slowly cooling lava just beneath the surface. This result may help us understand how the moon renews its surface so quickly, as well as how heat moves from its deep interior to the surface.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">&#8220;Io&#8217;s volcanoes, lava fields and underground lava flows act like a car radiator, efficiently transferring heat from the interior to the surface and cooling in the vacuum of space,&#8221; Brown said.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">Looking only at the JIRAM data, the team also determined that the most powerful eruption in Io&#8217;s history (first detected by an infrared sensor during Juno&#8217;s December 27, 2024, flyby of Io) was still spewing lava and ash as late as March 2.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">On orbit 53 (February 18, 2023), Juno began radio occultation experiments to study the temperature structure of the gas giant\u2019s atmosphere. This technology transmits radio signals from Earth to Juno and back, passing through Jupiter\u2019s atmosphere on both legs of the journey. Because the planet\u2019s atmospheric layers refract radio waves, scientists can precisely measure the effect of this refraction to obtain detailed information about the atmosphere\u2019s temperature and density.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">Juno has now completed 26 radio occultations. Among its most impressive discoveries: the first-ever temperature measurement of Jupiter&#8217;s north polar stratospheric cap, showing that the region is about 11 degrees Celsius cooler than the surrounding environment and is buffeted by winds exceeding 100 mph (161 km\/h).<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3549\" src=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/juno0808252.jpg\" sizes=\"auto, (max-width: 734px) 100vw, 734px\" srcset=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/juno0808252.jpg 734w, https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/juno0808252-300x183.jpg 300w\" alt=\"\" width=\"734\" height=\"447\" \/><\/p>\n<p style=\"text-align: justify;\"><em><span dir=\"auto\">This composite image, based on data collected in 2017 by the JIRAM instrument on NASA&#8217;s Juno spacecraft, shows a central cyclone at Jupiter&#8217;s north pole and eight cyclones surrounding it. Mission data suggest that these cyclones are stable features. NASA\/JPL-Caltech\/SwRI\/ASI\/INAF\/JIRAM<\/span><\/em><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">The team\u2019s recent discoveries also focus on the cyclones that plague Jupiter\u2019s northern region. Years of data from JunoCam\u2019s visible-light camera and JIRAM have allowed Juno scientists to observe the long-term motion of Jupiter\u2019s massive north polar cyclone and the eight cyclones that surround it. Unlike hurricanes on Earth, which tend to occur in isolation and at lower latitudes, Jupiter\u2019s hurricanes are confined to the polar region.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">By tracking the cyclones over multiple orbits, scientists have noticed that each cyclone gradually moves poleward through a process called beta drift (the interaction of the Coriolis force and the cyclone&#8217;s circular wind pattern). This is similar to the migration of hurricanes on our planet, but Earth&#8217;s cyclones break up before reaching the pole due to a lack of warm, moist air to feed them, as well as a weakening of the Coriolis force near the poles. Furthermore, Jupiter&#8217;s cyclones cluster as they approach the pole, and their motion slows as they interact with neighboring cyclones.<\/span><\/p>\n\n<p style=\"text-align: justify;\"><span dir=\"auto\">\u201cThese competing forces cause the cyclones to bounce off each other, like springs in a mechanical system,\u201d said Yochai Caspi, a Juno co-investigator at the Weizmann Institute of Science in Israel. \u201cThis interaction not only stabilizes the entire configuration, but also causes the cyclones to oscillate around their central positions, drifting slowly westward in a clockwise direction around the pole.\u201d<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">A new atmospheric model helps explain the movement of cyclones not only on Jupiter, but potentially on other planets, including Earth.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">\u201cOne of the great things about Juno is that its orbit is constantly changing, which means that every time we do a science flyby, we get a new vantage point,\u201d Bolton said. \u201cIn an extended mission, that means we\u2019ll continue to explore places no spacecraft has gone before, including spending more time in the solar system\u2019s most intense radiation belts. It\u2019s a little scary, but we built Juno like a tank, and every time we go through it, we learn more about this intense environment.\u201d<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">NASA&#8217;s Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, California, manages the Juno mission for Scott Bolton, principal investigator at the Southwest Research Institute in San Antonio. Juno is part of NASA&#8217;s New Frontiers program, which is run at NASA&#8217;s Marshall Space Flight Center in Huntsville, Alabama, for the agency&#8217;s Science Mission Directorate in Washington. The Italian space agency funded the Jovian infrared auroral mapper. Lockheed Martin Space in Denver built and operates the spacecraft. Other scientific instruments for Juno were provided by various U.S. organizations.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">More information about Juno can be found at: https:\/\/www.nasa.gov\/juno<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #800000;\"><strong><span dir=\"auto\">Data from NASA&#8217;s Juno mission shows that the solar-powered spacecraft entered safe mode twice as it flew past Jupiter on April 4, 2025.<\/span><\/strong><\/span><span dir=\"auto\"><span style=\"color: #800000;\">\u00a0<\/span>Safe mode is a precautionary state a spacecraft enters when it detects an anomaly. Nonessential functions are suspended, and the spacecraft focuses on essential tasks such as communications and power management. After entering safe mode, Juno&#8217;s science instruments were powered down for the remainder of the flyby, as designed.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">Juno first entered safe mode at 5:17 a.m. ET, about an hour before its 71st close pass of Jupiter, called a perijove. It entered safe mode again 45 minutes after the perijove. During both safe mode transitions, the spacecraft performed exactly as intended: rebooting its computer, turning off nonessential functions, and pointing its antenna toward Earth for communications.<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3550\" src=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/juno080825.jpg\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" srcset=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/juno080825.jpg 768w, https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/juno080825-300x200.jpg 300w\" alt=\"\" width=\"768\" height=\"512\" \/><br \/>\n<em><span dir=\"auto\">In this artist&#8217;s impression, NASA&#8217;s Juno spacecraft flies over Jupiter&#8217;s Great Red Spot. NASA\/JPL-Caltech<\/span><\/em><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">Of all the planets in the solar system, Jupiter is in the most hostile environment, and the radiation belts closest to the planet are the most intense. Preliminary data suggest that two perijovial 71 safe mode events occurred as the spacecraft flew through these belts. To prevent high-energy particles from affecting sensitive electronics and to mitigate harmful radiation exposure, Juno is equipped with a titanium radiation shelter.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">Including perijove 71 events, Juno has experienced four unexpected spacecraft-induced safe modes since arriving at Jupiter in July 2016: first in 2016 during its second orbit, and again in 2022 during its 39th orbit. In all four cases, the spacecraft behaved as expected and fully recovered.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #800000;\"><strong><span dir=\"auto\">Using cameras designed for navigation, scientists count the &#8220;fireflies&#8221; to determine the amount of radiation the spacecraft receives during each orbit around Jupiter.<\/span><\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">Scientists on NASA&#8217;s Juno mission have developed the first complete 3-D map of radiation in the Jupiter system. In addition to showing the intensity of high-energy particles near the orbit of the icy moon Europa, the map shows how the radiation environment is shaped by the small moons orbiting Jupiter&#8217;s rings.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">The work is based on data collected by Juno&#8217;s Advanced Stellar Compass (ASC), designed and built by the Technical University of Denmark, and the spacecraft&#8217;s Stellar Reference Unit (SRU), built by Leonardo SpA in Florence, Italy. The two data sets complement each other, helping Juno scientists characterize the radiation environment at different energies.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">Both the ASC and SRU are low-light cameras designed for deep-space navigation. Almost all spacecraft carry them. But to make them work as radiation detectors, the Juno team had to think about the cameras in a whole new way.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">\u201cAt Juno, we\u2019re trying to find new ways to use our sensors to study nature, and we\u2019ve been using many of our science instruments in ways that weren\u2019t intended,\u201d said Scott Bolton, Juno\u2019s principal investigator at the Southwest Research Institute in San Antonio. \u201cThis is the first detailed map of the region\u2019s radiation at such high energies, which is an important step in understanding how Jupiter\u2019s radiation environment works. It will help guide observations for the next generation of missions to the Jupiter system.\u201d<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3551\" src=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter0608256.jpg\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" srcset=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter0608256.jpg 768w, https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter0608256-300x180.jpg 300w\" alt=\"\" width=\"768\" height=\"460\" \/><br \/>\n<em><span dir=\"auto\">Jupiter. NASA<\/span><\/em><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">Juno&#8217;s ASC, which consists of four star cameras mounted on the spacecraft&#8217;s magnetometer boom, takes images of stars to determine the spacecraft&#8217;s orientation in space, which is critical to the success of the magnetic field experiment. The instrument has also proven to be a valuable detector of high-energy particle fluxes in Jupiter&#8217;s magnetosphere. The cameras detect &#8220;hard radiation,&#8221; or ionizing radiation, that hits the spacecraft with enough energy to pass through the ASC&#8217;s shielding.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">\u201cEvery quarter of a second, the ASC takes a picture of the stars,\u201d said Jon Leif J\u00f8rgensen, a scientist at the Technical University of Denmark who works on the Juno project. \u201cThe high-energy electrons that penetrate its shielding leave a distinctive trail in the pictures, similar to the trail of a firefly. The instrument is programmed to count the number of these fireflies, which allows us to accurately calculate the intensity of the radiation.\u201d<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">Due to Juno&#8217;s constantly changing orbit, the spacecraft has crossed almost every region of space near Jupiter.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">The ASC data suggest that there is more very high-energy radiation near Europa&#8217;s orbit compared to lower-energy radiation than previously thought. The data also confirm that there are more high-energy electrons on the side of Europa facing the direction of its orbital motion than on the moon&#8217;s trailing side. This is because most of the electrons in Jupiter&#8217;s magnetosphere overtake Europa from behind due to the planet&#8217;s rotation, while the high-energy electrons drift backward, like a fish swimming against a current, and slam into Europa&#8217;s leading side.<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3552\" src=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/evropa060825.jpg\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" srcset=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/evropa060825.jpg 768w, https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/evropa060825-300x295.jpg 300w, https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/evropa060825-80x80.jpg 80w, https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/evropa060825-60x60.jpg 60w\" alt=\"\" width=\"768\" height=\"754\" \/><br \/>\n<em><span dir=\"auto\">Jupiter&#8217;s moon Europa was captured by JunoCam aboard NASA&#8217;s Juno spacecraft during a close flyby on September 29, 2022. NASA\/JPL-Caltech\/SwRI\/MSSS. Image processing: Bj\u00f6rn J\u00f6nsson (CC BY 3.0)<\/span><\/em><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">Jupiter&#8217;s emission data is not the ASC&#8217;s first scientific contribution to the mission. Even before arriving at Jupiter, ASC data was used to determine the amount of interstellar dust falling on Juno. The camera also discovered a previously unexplored comet using the same dust-detection technique, identifying small particles from the spacecraft ejected by microscopic dust falling on Juno at high speed.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">Like Juno\u2019s ASC, the SRU was used as a radiation detector and low-light imager. Data from both instruments indicate that, like Europa, the small \u201cshepherd moons\u201d that orbit within or near the edge of Jupiter\u2019s rings (and help maintain the rings\u2019 shape) also appear to interact with the planet\u2019s radiation environment. When the spacecraft flies along magnetic field lines associated with ring moons or dense dust, the radiation intensity of both the ASC and SRU drops sharply. The SRU also obtains rare low-light images of the rings from Juno\u2019s unique vantage point.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">\u201cThere are still many mysteries about how Jupiter\u2019s rings formed, and previous spacecraft have captured very few images,\u201d said Heidi Becker, SRU\u2019s principal investigator and a research scientist at NASA\u2019s Jet Propulsion Laboratory in Southern California, which is leading the mission. \u201cSometimes we get lucky and one of the small shepherd moons pops into the frame. These images allow us to pinpoint the current locations of the ring moons and see how the dust is distributed as a function of their distance from Jupiter.\u201d<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #800000;\"><strong><span dir=\"auto\">Juno arrived in the Jovian system in 2016, but due to a thruster failure it is now, in 2025, stuck in a wide polar orbit that passes Jupiter and its moons every 53 days.<\/span><\/strong><\/span><span dir=\"auto\">\u00a0However, during these flybys, Juno has collected a wealth of high-quality data on Jupiter\u2019s atmosphere, including at the planet\u2019s poles, which have not previously been studied in detail. Juno\u2019s latest results will be presented on April 29, 2025, at the General Assembly of the European Geosciences Union in Vienna.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">At Jupiter&#8217;s north pole is a cap of stratospheric haze that Juno has found to be 52 degrees Fahrenheit (11 degrees Celsius) cooler than the surrounding environment. Jet streams that blow around the cap reach speeds of over 161 kilometers per hour (100 miles per hour). Below the haze, in the north polar region, is one giant central cyclone about 3,000 kilometers (1,864 miles) in diameter, surrounded by its &#8220;bands&#8221; of eight smaller cyclones that range from 2,400 to 2,800 kilometers (1,490 to 1,790 miles) in size, far larger than any similar phenomena on Earth.<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3553\" src=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter3007258.jpg\" sizes=\"auto, (max-width: 970px) 100vw, 970px\" srcset=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter3007258.jpg 970w, https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter3007258-300x194.jpg 300w, https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter3007258-768x496.jpg 768w\" alt=\"\" width=\"970\" height=\"627\" \/><br \/>\n<em><span dir=\"auto\">An infrared image of a cyclone at Jupiter&#8217;s north pole and eight cyclones orbiting it, taken with JIRAM. NASA\/JPL-Caltech\/SwRI\/ASI\/INAF\/JIRAM<\/span><\/em><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">Juno has been tracking the movement of this cyclone system in visible and infrared light (disguised as heat emanating from deeper in the atmosphere) since 2016, using JunoCam and the Jovian Infrared Aurora Mapper (JIRAM), respectively. The two instruments have shown that each of the eight cyclones is drifting poleward through a process called \u201cbeta drift.\u201d The same process occurs with cyclones on Earth, and is the result of the interaction of the Coriolis force with the swirling wind pattern associated with each cyclone. However, on Earth, the cyclones never get close to the poles. This is because the closer they get to the cold, dry poles, the more they run out of warm, moist air to power them. On Jupiter, the atmospheric dynamics are different, and this is not a problem. But once at the pole, Jupiter\u2019s cyclones start to collide with each other.<\/span><\/p>\n\n<p style=\"text-align: justify;\"><span dir=\"auto\">\u201cThese competing forces cause the cyclones to bounce off each other, like springs in a mechanical system,\u201d said Yochai Caspi, a Juno co-investigator at the Weizmann Institute of Science in Israel. \u201cThis interaction not only stabilizes the entire configuration, but also causes the cyclones to oscillate around their central positions, drifting slowly westward in a clockwise direction around the pole.\u201d<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">Meanwhile, far from Jupiter&#8217;s atmosphere, Juno has recently been making regular flybys of Jupiter&#8217;s innermost moon, Io, the most volcanic body in the solar system.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">During Juno&#8217;s flyby of Io on December 27, 2024, the spacecraft captured what turned out to be the most powerful volcanic eruption ever recorded on Io; when Juno returned on March 2, the volcano was still spewing lava.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">But it&#8217;s what lies beneath Io&#8217;s surface that has Juno&#8217;s science team so excited. By combining the spacecraft&#8217;s Microwave Radiometer (MWR) with JIRAM, scientists were able to measure the temperature of Io&#8217;s subsurface, revealing the presence of underground magma flows.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">Juno had previously ruled out the existence of a vast magma ocean beneath Io&#8217;s surface that could feed volcanoes, but these cooling updrafts could explain how volcanoes erupt on Io. The science team calculated that about 10% of the moon&#8217;s surface is covered in these cooling flows, giving us a better understanding of how heat is transferred from Io&#8217;s hot interior to its surface, allowing the planet to frequently rise to the surface via lava flows that gushes out onto the surface.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">&#8220;Io&#8217;s volcanoes, lava fields and underground lava flows act like a car radiator, efficiently transferring heat from the interior to the surface and cooling in the vacuum of space,&#8221; Brown said.<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3555\" src=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter30072510.jpg\" sizes=\"auto, (max-width: 734px) 100vw, 734px\" srcset=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter30072510.jpg 734w, https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter30072510-300x183.jpg 300w\" alt=\"\" width=\"734\" height=\"447\" \/><br \/>\n<em><span dir=\"auto\">Jupiter as imaged by JunoCam on January 28, 2025, from a distance of 36,000 miles (58,000 kilometers). NASA\/JPL\u2013Caltech\/SwRI\/MSSS Image processing: Jackie Branch (CC BY)<\/span><\/em><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #800000;\"><strong><span dir=\"auto\">An image taken by NASA&#8217;s Juno spacecraft shows features of the turbulent atmosphere of the solar system&#8217;s largest planet in the same colors as they would be seen by a human observer.<\/span><\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">This image was taken on July 5, 2022, by Juno during its 43rd flyby of Jupiter using its JunoCam camera. At the time of the image, the spacecraft was 5,300 kilometers (3,300 miles) from the gas giant&#8217;s cloud tops, traveling at 209,000 km\/h (130,000 mph).<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">Amateur scientist Bj\u00f6rn J\u00f6nsson processed the raw data from Juno to create two images. The image on the left shows the view as seen from Juno&#8217;s vantage point. In the image on the right, J\u00f6nsson digitally enhanced the color saturation and contrast to highlight the complex structure of the planet&#8217;s atmosphere.<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3556\" src=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter030825.jpg\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" srcset=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter030825.jpg 650w, https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter030825-300x169.jpg 300w\" alt=\"\" width=\"650\" height=\"366\" \/><br \/>\n<em><span dir=\"auto\">A new image from NASA&#8217;s Juno spacecraft reveals colorful details of the planet&#8217;s atmosphere. NASA\/JPL-Caltech\/SwRI\/MSSS\/Bj\u00f6rn J\u00f3nsson<\/span><\/em><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">The color differences in the enhanced image reflect differences in the chemical composition of different parts of Jupiter&#8217;s atmosphere and reveal the three-dimensional nature of the powerful storms raging in the planet&#8217;s clouds. Bright &#8220;pop-up&#8221; clouds in the upper atmosphere are also visible. The image captures a region at about 50 degrees north latitude.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">The Juno probe, launched in 2011, has been exploring the gas giant since 2016. Moving around the planet in a highly elliptical orbit, the probe makes one revolution every 43 days, regularly approaching the planet&#8217;s swirling clouds. At the moment of closest approach, Juno descends approximately 5,000 km above the gas giant&#8217;s clouds.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #800000;\"><strong><span dir=\"auto\">NASA&#8217;s Juno spacecraft flew close to Jupiter on January 12, 2022, capturing a stunning new view of the planet and its two moons, Io and Europa.<\/span><\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">The image of the two moons was captured by Juno during the spacecraft&#8217;s 39th close flyby of Jupiter on January 12, 2022. At the time, the spacecraft was about 38,000 miles (61,000 kilometers) above Jupiter&#8217;s cloud tops, at a latitude of about 52 degrees south.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">A photo released by NASA on March 16, 2022, shows a stunning view of Jupiter&#8217;s southern hemisphere, with two of its many moons on the right. A zoomed-in image also shared by the agency allows the moons to be clearly seen: Io on the left and Europa on the right.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">Jupiter&#8217;s moon Io is the most volcanic body in the solar system. Its surface is dotted with hundreds of volcanoes, some of which spew sulfuric plumes hundreds of kilometers into the air.<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3557\" src=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter3007254.jpg\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" srcset=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter3007254.jpg 650w, https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter3007254-300x197.jpg 300w\" alt=\"\" width=\"650\" height=\"426\" \/><br \/>\n<em><span dir=\"auto\">This stunning image, taken during Juno&#8217;s 39th flyby of Jupiter on January 12, 2022, shows the planet&#8217;s two moons, Io (left) and Europa (right). NASA\/JPL-Caltech\/SwRI\/MSSS\/processed by AndreaLuck CC BY<\/span><\/em><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">In contrast, Europa, the smallest of Jupiter&#8217;s four giant Galilean moons, has an icy surface that scientists believe contains a global ocean of liquid water. Previous observations have found evidence of possible jets of water ejected from Europa&#8217;s south polar region, suggesting that the moon&#8217;s subsurface ocean contains water escaping through cracks in its icy crust.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">The Jupiter image was processed by citizen scientist Andrea Luck using raw data from JunoCam. JunoCam&#8217;s raw images are available online for anyone to view; community members can also suggest objects on Jupiter for the camera to capture.<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3558\" src=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter3007253.jpg\" sizes=\"auto, (max-width: 970px) 100vw, 970px\" srcset=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter3007253.jpg 970w, https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter3007253-300x169.jpg 300w, https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/yupiter3007253-768x432.jpg 768w\" alt=\"\" width=\"970\" height=\"546\" \/><br \/>\n<em><span dir=\"auto\">A full view of Jupiter, Io, and Europa taken by the Juno spacecraft on January 12, 2022. (Image credit: NASA\/JPL-Caltech\/SwRI\/MSSS\/processing by AndreaLuck CC BY)<\/span><\/em><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #800000;\"><strong><span dir=\"auto\">Juno&#8217;s 38th flyby of Jupiter offers stunning views of the planet, as well as Callisto and Io. NASA&#8217;s Juno spacecraft&#8217;s flyby of Jupiter has produced stunning images of the gas giant&#8217;s cloud tops and its moons Callisto and Io.<\/span><\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">The released image was captured by the spacecraft&#8217;s JunoCam on November 29, 2021, as Jupiter&#8217;s Juno spacecraft completed its 38th close flyby of our solar system&#8217;s largest planet.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">The image shows Jupiter&#8217;s arcing horizon and the planet&#8217;s swirling, billowing clouds, as well as the moons Io (top) and Callisto (bottom).<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">The image was taken when Juno was about 8,700 miles (14,000 kilometers) above Jupiter&#8217;s cloud tops, at a latitude of about 69 degrees, moving at about 123,000 mph (198,000 km\/h) relative to the planet, NASA said.<\/span><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3559\" src=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/io0308252.jpg\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" srcset=\"https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/io0308252.jpg 650w, https:\/\/planeta21vek.ru\/wp-content\/uploads\/2025\/08\/io0308252-300x192.jpg 300w\" alt=\"\" width=\"650\" height=\"416\" \/><br \/>\n<em><span dir=\"auto\">NASA&#8217;s Juno probe captured this image of Jupiter&#8217;s atmosphere and its moons Io (top) and Callisto (bottom) during a close flyby on November 29, 2021.NASA\/JPL-Caltech\/SwRI\/MSSS; Image processing: Gerald Eichstedt\/Thomas Thomopoulos \u00a9 CC BY<\/span><\/em><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">Citizen scientist Gerald Eichstedt used raw JunoCam data to create the original version of this image. Another scientist, Thomas Thomopoulos, then processed it, upscaling it and improving the colors, NASA said.<\/span><\/p>\n<p style=\"text-align: justify;\"><span dir=\"auto\">Juno recently flew past another of Jupiter\u2019s four large Galilean moons, the icy, ocean-covered Europa, providing the first close-up images of the moon in more than 20 years. In April 2021, Juno also made a close pass of the fourth Galilean moon, Ganymede, and during that flyby, it captured dramatic images of the solar system\u2019s largest moon.<\/span><\/p>\n\n","protected":false},"excerpt":{"rendered":"<p>New data from the agency\u2019s Jupiter orbiter shed light on the fierce winds and cyclones of the gas giant\u2019s northern reaches, as well as volcanic activity on its fiery moon. NASA\u2019s Juno mission has obtained new data by peering beneath Jupiter\u2019s cloudy atmosphere and onto the surface of its fiery moon Io. The data not only helped develop a new model to better understand the fast-moving jet stream that sweeps across Jupiter\u2019s cyclone-strewn north pole, but also revealed for the first time the temperature profile beneath Io\u2019s surface, providing insight into the moon\u2019s interior and volcanic activity.<\/p>\n","protected":false},"author":1,"featured_media":1946,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[543,40],"tags":[615,901,324],"class_list":{"0":"post-1945","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-solar-system","8":"category-kosmos","9":"tag-io","10":"tag-juno","11":"tag-jupiter"},"_links":{"self":[{"href":"https:\/\/planeta21vek.ru\/eng\/wp-json\/wp\/v2\/posts\/1945","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/planeta21vek.ru\/eng\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/planeta21vek.ru\/eng\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/planeta21vek.ru\/eng\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/planeta21vek.ru\/eng\/wp-json\/wp\/v2\/comments?post=1945"}],"version-history":[{"count":1,"href":"https:\/\/planeta21vek.ru\/eng\/wp-json\/wp\/v2\/posts\/1945\/revisions"}],"predecessor-version":[{"id":1947,"href":"https:\/\/planeta21vek.ru\/eng\/wp-json\/wp\/v2\/posts\/1945\/revisions\/1947"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/planeta21vek.ru\/eng\/wp-json\/wp\/v2\/media\/1946"}],"wp:attachment":[{"href":"https:\/\/planeta21vek.ru\/eng\/wp-json\/wp\/v2\/media?parent=1945"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/planeta21vek.ru\/eng\/wp-json\/wp\/v2\/categories?post=1945"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/planeta21vek.ru\/eng\/wp-json\/wp\/v2\/tags?post=1945"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}