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Juno

All articles tagged with #juno

science18 days ago•10 min saved

Neutrinos Sketch Earth's Mantle Heat Map

A global network of neutrino detectors, including Canada’s SNO+ and China’s JUNO, is measuring geoneutrinos to quantify the heat-producing elements in Earth’s mantle. Early results from SNO+ show western hemisphere fluxes that hint at mantle heterogeneity linked to deep structures like large low-shear-velocity provinces (LLSVPs), but large uncertainties remain. More data and improved geological modeling, and possibly an ocean-bottom detector, could sharpen the map of the planet’s interior heat sources.

via Quanta Magazine|

#geoneutrinos #juno #mantle

space29 days ago•3 min saved

Juno Reveals Subsurface Heat Beneath Io, Solar System's Most Volcanic Moon

NASA's Juno spacecraft, using its Microwave Radiometer, detected heat rising beneath Io’s surface during two close flybys, revealing a subsurface temperature gradient of more than 40°F a few feet deep. The heat could come from a conductive crust or cooling lava flows and underscores Io's extreme tidal heating, offering insights into volcanism and potentially informing studies of subsurface oceans on other worlds.

via Gizmodo|

#io #juno #jupiter

space1 month ago•14 min saved

Europa's ocean lies beneath a 29-kilometer ice shell, new Juno data suggest

A Juno Microwave Radiometer study estimates an average conductive ice shell of about 29 ± 10 km over Europa’s ocean in the observed region, favoring a thick-shell interpretation. The result is model-based and region-specific, not a global map, and factors like salt content or convection could shift the thickness. This finding tightens the barrier between surface ice and the ocean and underscores why Europa Clipper’s radar, gravity and other measurements are needed to test regional variation and the moon’s habitability potential.

via Space Daily|

#europa #habitability #ice-shell

space-exploration1 month ago•120 min saved

Juno Reveals Io's Hidden Heat: Subsurface Clues to a Volcanic Powerhouse

NASA's Juno spacecraft used its Microwave Radiometer to peer beneath Io's surface during late-2023 and early-2024 flybys, uncovering a buried heat signature with temperatures rising several feet below the crust and localized warm pockets. The findings, published in the Journal of Geophysical Research: Planets, show heat moving through Io's crust by conduction or from cooling lava, driven by Jupiter's tidal forces, and offer insights for understanding volcanism on Earth and subsurface oceans on other icy moons such as Europa and Ganymede.

via Space|

#io #juno #jupiter

space2 months ago•4 min saved

Human Error Grounds NASA’s Deep Space Antenna, $4M-plus Repair Bill

NASA’s Deep Space Network suffered a major mishap at DSS-14 when an electrical fault misreported rotation caused over-rotation and damage to cabling, hydraulics, and the fire-suppress system; operators troubleshooting the limit stops bypassed safeguards, and an undocumented failure plus an inoperable hydraulic limit system amplified the damage. Repairs are estimated at $4.1–$4.6 million and could stretch to October 2028. NASA says it will tighten procedures, training, and in-house capabilities across all DSN sites to prevent a repeat.

via Gizmodo|

#deep-space-network #dsn #investigation

science2 months ago•3 min saved

JUNO Unveils Early Clues in the Neutrino Flavor Mystery

JUNO, a 20-ktonne underground detector in China, released two months of data showing precise measurements of how neutrinos change flavor and offering clues about their masses; the detector observes electron antineutrinos from nearby reactors via inverse beta decay and aims to resolve the neutrino-mass hierarchy, with cross-checks expected from Hyper-Kamiokande and DUNE in the coming decade; findings published in Nature.

via ScienceAlert|

#antineutrinos #juno #neutrino-flavors

physics2 months ago•6 min saved

JUNO sharpens neutrino-oscillation picture, edging toward mass hierarchy

With about two months of data, the Jiangmen Underground Neutrino Observatory (JUNO) measured two key reactor-neutrino oscillation parameters with 1.6× better precision than decades of previous experiments. The results, published in Nature, advance the effort to determine the neutrino mass ordering and shed light on the origin of neutrino masses, using a 20,000‑ton scintillator detector instrumented with 43,000 photomultiplier tubes observing reactor antineutrinos ~53 km away.

via Nature|

#juno #neutrino-mass #neutrino-oscillation

science2 months ago•44 min saved

First JUNO Data Pinpoints Neutrino Oscillation Parameters with High Precision

JUNO's first 59.1 days of data from a 20-kton detector at 52.5 km from reactors yield a simultaneous, high-precision measurement of sin^2θ12 = 0.3092 ± 0.0087 and Δm21^2 = (7.50 ± 0.12)×10^-5 eV^2 for the normal mass ordering, improving precision by a factor of 1.6 over previous measurements and validating JUNO's design and energy calibration while showing readiness to determine the neutrino mass hierarchy with more data.

via Nature|

#delta-m212 #juno #mass-ordering

science2 months ago•14 min saved

China's JUNO detector reveals first major neutrino findings

China's Jiangmen Underground Neutrino Observatory (JUNO) has released its first major neutrino findings from its underground detector, marking a milestone in the study of these elusive ghost particles.

via AP News|

#china #juno #neutrinos

space3 months ago•71 min saved

Juno captures close-up of Jupiter's inner moon Thebe

NASA's Juno spacecraft captured a rare close-up view of Jupiter's inner moon Thebe during a May 1, 2026 flyby, about 3,100 miles away, using its Stellar Reference Unit camera, which wasn't designed for close-up moon imaging; Thebe—discovered by Voyager 1 in 1980—is Jupiter's second-largest inner moon and remains a focus during Juno's extended mission.

via Space|

#juno #jupiter #nasa

space4 months ago•9 min saved

Jupiter’s Stealth Storms Reveal Lightning Up to 100× Earth Power

Using NASA’s Juno data and Hubble imagery, scientists find Jupiter’s storms unleash lightning far stronger than Earth’s—some flashes may reach 100× Earth’s power, with total energy hundreds to thousands of times greater. By tracking isolated 2021–22 “stealth” storms, researchers correlated microwave signals with specific events in 100+ km‑tall clouds, though exact energies depend on wavelength and storm dynamics. The study, published in AGU Advances (2026), highlights differences in Jupiter’s hydrogen‑rich atmosphere and ammonia‑water ice (potential “mushball” hail) physics, while leaving many details of the mechanism unresolved.

via SciTechDaily|

#astronomy #juno #jupiter

science4 months ago•6 min saved

Jupiter’s Lightning Outmatches Earth, Fueled by Deep Hydrogen Storms

New AGU Advances research using Juno data directly estimates the power of Jupiter’s lightning and finds its storms unleash far more energetic discharges than on Earth, likely due to Jupiter’s tall, hydrogen-rich atmosphere and deep moist convection that store energy before release, revealing different lightning physics and making Jupiter a natural laboratory for extreme weather.

via The Daily Galaxy|

#agu-advances #atmosphere #juno

astronomy5 months ago•4 min saved

Jupiter’s Lightning: Up to a Million Times More Powerful Than Earth’s

New NASA Juno data suggest Jupiter’s lightning could be up to a million times more powerful than Earth’s, inferred from radio-emission measurements. The study highlights how Jupiter’s hydrogen-rich atmosphere and towering, long-lasting storms—including months-long 'stealth' storms—may amplify lightning energy, offering new insights into the gas giant’s weather and atmospheric dynamics.

via The Daily Galaxy|

#astronomy #atmosphere #juno

space5 months ago•75 min saved

Jupiter’s lightning could be up to a million times stronger than Earth’s bolts

A study using NASA’s Juno data suggests Jupiter’s lightning may be enormously more powerful than Earth’s—potentially up to a million times stronger. By analyzing the planet’s radio emissions rather than optical flashes and focusing on long-lived “stealth” storms in Jupiter’s belts, researchers estimated lightning pulses with power ranging from Earth-like bolts to far more powerful discharges. The findings, which consider Jupiter’s hydrogen-dominated atmosphere and towering storm clouds (up to ~62 miles tall), aim to explain why Jovian lightning is so energetic and were published in AGU Advances.

via Space|

#agu-advances #juno #jupiter

space5 months ago•10 min saved

Juno keeps pulling Jovian science as NASA weighs mission cuts

NASA’s Juno mission continues to reveal powerful storms and deep lightning activity on Jupiter, even as budget pressures force NASA to consider retiring aging planetary probes; the science highlights the trade-off between continuing observations and funding new or existing missions.

via Ars Technica|

#budget #juno #jupiter