NASA Juno
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NASA
NASA’s Juno Peers Beneath Io’s Surface
Downloads NASA’s Juno Peers Beneath Io’s Surface PNG (2.07 MB) Description This map represents data captured by the Microwave Radiometer (MWR) aboard NASA’s Juno spacecraft, indicating heat rising from just beneath the surface of Jupiter’s moon Io. While infrared instruments measure the temperature of the moon’s surface, the lowest frequency microwave channels (0.6 and 1.25 gigahertz) on the MWR can…
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NASA
NASA’s Juno Takes Temperature of Jupiter’s Fiery Moon Io
Lee esta historia en español aquí. NASA’s Juno mission has provided the first measurements of the temperature below the surface of Jupiter’s moon Io, revealing significant heating within the shallow subsurface of the most volcanically active world in the solar system. Collected during two close flybys, the data also shows that most of Io’s surface is remarkably smooth and composed of…
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NASA
Jupiter’s Volcanic Moon Io
During its close flyby of Jupiter’s moon Io on December 30, 2023, NASA’s Juno spacecraft captured some of the most detailed imagery ever of Io’s volcanic surface. In this image, taken by the JunoCam instrument from about 930 miles (1,500 kilometers) above the moon, Io’s night side [left lobe] is illuminated by “Jupitershine,” which is sunlight reflected from the planet’s surface. This…
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NASA
Jupiter’s Turbulent Atmosphere
JunoCam, the visible light imager aboard NASA’s Juno spacecraft, captured this view of Jupiter’s northern high latitudes during the spacecraft’s 69th flyby of the giant planet on Jan. 28, 2025. Jupiter’s belts and zones stand out in this enhanced color rendition, along with the turbulence along their edges caused by winds going in different directions. The original JunoCam data used to…
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NASA
NASA Juno Mission Spots Most Powerful Volcanic Activity on Io to Date
Even by the standards of Io, the most volcanic celestial body in the solar system, recent events observed on the Jovian moon are extreme. Scientists with NASA’s Juno mission have discovered a volcanic hot spot in the southern hemisphere of Jupiter’s moon Io. The hot spot is not only larger than Earth’s Lake Superior, but it also belches out eruptions…
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NASA
NASA’s Juno Provides High-Definition Views of Europa’s Icy Shell
Imagery from the solar-powered spacecraft shows some intriguing features on the ice-encased Jovian moon. Images from the JunoCam visible-light camera aboard NASA’s Juno spacecraft supports the theory that the icy crust at the north and south poles of Jupiter’s moon Europa is not where it used to be. Another high-resolution picture of the icy moon, by the spacecraft’s Stellar Reference…
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NASA
NASA’s Juno Mission Spots Jupiter’s Tiny Moon Amalthea
NASA’s Juno mission captured these views of Jupiter during its 59th close flyby of the giant planet on March 7, 2024. They provide a good look at Jupiter’s colorful belts and swirling storms, including the Great Red Spot. Close examination reveals something more: two glimpses of the tiny moon Amalthea (see Figure B below). Figure B NASA’s Juno mission captured…
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NASA
NASA’s Juno to Get Close Look at Jupiter’s Volcanic Moon Io on Dec. 30
The orbiter has performed 56 flybys of Jupiter and documented close encounters with three of the gas giant’s four largest moons. NASA’s Juno spacecraft will on Saturday, Dec. 30, make the closest flyby of Jupiter’s moon Io that any spacecraft has made in over 20 years. Coming within roughly 930 miles (1,500 kilometers) from the surface of the most volcanic world…
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NASA
NASA’s Juno Finds Jupiter’s Winds Penetrate in Cylindrical Layers
The finding offers deeper insights into the long-debated internal structure of the gas giant. Gravity data collected by NASA’s Juno mission indicates Jupiter’s atmospheric winds penetrate the planet in a cylindrical manner, parallel to its spin axis. A paper on the findings was recently published in the journal Nature Astronomy. The violent nature of Jupiter’s roiling atmosphere has long been a…
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NASA
Salts and Organics Observed on Ganymede’s Surface by NASA’s Juno
Data collected by NASA’s Juno mission indicates a briny past may be bubbling to the surface on Jupiter’s largest moon. NASA’s Juno mission has observed mineral salts and organic compounds on the surface of Jupiter’s moon Ganymede. Data for this discovery was collected by the Jovian InfraRed Auroral Mapper (JIRAM) spectrometer aboard the spacecraft during a close flyby of the…
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