The Sundarban 
(Left) Io as seen by NASA’s Galileo spacecraft on 3 July 1999 (Appropriate) A big volcanic hotspot seen by Juno in 2024.
(Image credit score: NASA / JPL / College of Arizona/ NASA/JPL-Caltech/SwRI/ASI/INAF/JIRAM)
The most violent volcanic cataclysm ever seen in our solar machine has been witnessed on Jupiter’s moon Io by NASA’s Juno spacecraft, with simultaneous eruptions covering a huge 40,400 sq. miles (65,000 sq. kilometers). The synchronous eruptions point to a hitherto undetected network of interconnected magma reservoirs factual beneath the volcanic moon’s lava-encrusted floor.
The eruptions launched an amount of energy estimated to be between 140 and 260 terawatts (one terawatt is a trillion watts). The earlier most energetic volcanic eruption seen on Io used to be about 80 terawatts, from a volcano called Surt in 2001. For comparison, the Mount St Helens eruption in Washington disclose in 1980 had a energy of 52 terawatts.
The volcanic match took region on Dec. 27, 2024, coinciding with one of Juno’s end cruise-bys of Io, when the spacecraft used to be 46,200 miles (74,400 kilometers) above the moon’s charred floor. Io, which has a diameter of 2,263 miles (3,643 km), harbors approximately 400 energetic volcanoes scattered across its floor, and their frequent eruptions are pushed by the vice-like grip of gravitational tidal forces emanating from Jupiter that squeeze and flex Io’s interior, generating extra than ample warmth to have faith its mantle molten.
Photos of Io taken by Juno in the route of several cruise-bys detect how the region in which the volcanic match used to be positioned modified. (Image credit score: NASA/JPL–Caltech/SwRI/MSSS/Image processing by Jason Perry.)
What’s most sharp about this explicit volcanic match is the formulation that multiple volcanoes all lit up at the similar time, implying that they are connected by astronomical pools of magma that gasoline multiple eruptions at once. Mura’s analysis crew suggests that the sub-floor and mantle of Io will be like a sponge, in the sense that it is paunchy of pores stuffed with magma. Curiously, no longer all the known volcanoes in the region erupted, suggesting that other folk that didn’t erupt had been no longer connected to this explicit magma network, however will be linked to others as a change.
Jupiter’s moon Io is roofed in volcanoes, lava flows and ash deposits. (Image credit score: NASA/JPL–Caltech/SwRI/MSSS/Image processing by Gerald Eichstädt.)
The volcanic outburst used to be detected by Juno’s JIRAM (Jovian InfraRed Auroral Mapper) instrument, for which Mura is the main investigator. JIRAM had been designed to probe thermal emissions in Jupiter’s atmosphere and stamp for aurorae, however JIRAM’s infrared prowess also makes it honest for recognizing volcanic hotspots on Io.
As section of Juno’s extended mission, the spacecraft is making end encounters of Jupiter’s super Galilean moons after having spent most of its mission away from them. All the plot through future cruise-bys of Io, Juno will gaze the moon’s floor shopping for recent lava flows and ash deposits as a consequence of this spectacular volcanic eruption.
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The findings are described in a paper published on Jan. 10 in Journal of Geophysical Research: Planets.
Keith Cooper is a freelance science journalist and editor in the United Kingdom, and has a diploma in physics and astrophysics from the College of Manchester. He’s the creator of “The Contact Paradox: Challenging Our Assumptions in the Search for Extraterrestrial Intelligence” (Bloomsbury Sigma, 2020) and has written articles on astronomy, region, physics and astrobiology for a huge quantity of magazines and net sites.
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