✨🔭 Interesting news from outer space: #Cassini data plus global #MHD #simulations show that #Saturn’s cusp is not noon-centered like #Earth’s, but shifted toward the post-noon and even post-dusk sector. Xu, Yao, & Arridge et al. identify 67 cusp events and argue that rapid rotation plus internal #plasma sources fundamentally reshape Saturn’s global magnetic topology:

📝 https://doi.org/10.1038/s41467-026-69666-9

#SpacePhysics #PlanetaryScience #Magnetosphere

🛰️ New paper by Knowles et al.: Using the #JWST, the authors observed rapid variability in the auroral footprints of #Jupiter’s #moons in Jupiter’s #atmosphere.

IR observations show that the footprints of moons like #Io can change on short timescales, highlighting the dynamic interaction between Jupiter’s #magnetosphere and its satellites. The moon–magnetosphere coupling driving Jupiter’s #aurora is more variable than previously assumed.

📄https://doi.org/10.1029/2025GL118553

#SpacePhysics #PlanetaryScience

Artemis II: Sending Humans Beyond the Magnetosphere 🌑🧑‍🚀

#Artemis #Magnetosphere #MannedSpaceFlight #Moon #RadiationExposure #SolarWind #SpaceWeather #SunEarthMoonInteractions

⏩ 1 new picture and 1 new video from NASA (SVS) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=2&user=OptimusPrimeBot&ilshowall=1&offset=20260306125534

✨🔭 New observations of #Ganymede 🌖reveal a surprising similarity between the #auroras 🌌 on the #SolarSystem's largest #moon and those on #Earth 🌍. A team of space physicists has obtained new results suggesting that the fundamental physical processes that generate auroras are common to different celestial bodies.

🌍 https://www.researchgate.net/publication/400351529_Juno's_high-spatial-resolution_ultraviolet_observations_of_Ganymede's_auroral_patches_Constraints_on_the_magnetospheric_source_region

#auroq #SpacePhysics #Jupiter #PlasmaPhysics #Juno #JunoSpacecraft #magnetosphere

Thanks @Umbertogaetani for sharing 🙏 https://mastodon.uno/@Umbertogaetani/116113873863038999

Using joint observations from the #Tianwen-1 in the #solarwind and #MAVEN in the induced #magnetosphere, Lin et al. identified a magnetic barrier between #Mars’ #ionosphere and shocked solar wind under the radial #IMF for the first time.

📄 https://doi.org/10.1016/j.xinn.2026.101312

#SpacePhysics #PlasmaPhysics #SolarSystem

Viewing an Exoplanet Transmission Spectrum 🛰️

#Exoplanet #ExoplanetAtmospheres #Fleet #Heliopause #Heliophysics #Heliosphere #Magnetopause #Magnetosphere

⏩ 3 new pictures and 3 new videos from NASA (SVS) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=22&user=OptimusPrimeBot&ilshowall=1&offset=20260128125704

#MachineLearning anlysis of 20 years of in situ measurements in the #Earth's #magnetosphere brings new insights on #MagneticReconnection processes:

📄 https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025GL119118

#SpacePhysics #Plasma #PlasmaPhysics #SolarWind #Reconnection @irap https://social.numerique.gouv.fr/@irap/115966776951772619

[#Magnetic reconnection] In the Earth's space environment, it connects the interplanetary and terrestrial magnetic fields, allowing #plasma from the #SolarWind to penetrate the #magnetosphere, which is otherwise confined.

The use of machine learning algorithms has enabled the analysis of 20 years of data measured in situ by four different space missions in the Earth's magnetosphere... and confirmed the necessary speed of the magnetic reconnection process: https://www.irap.omp.eu/en/2026/01/magnetic-reconnection-models-validated-by-analysis-of-twenty-years-of-measurements/