#spacephysics — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #spacephysics, aggregated by home.social.
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@Umbertogaetani One thing that surprised me: I don’t see Roth et al.’s #HST work on #Europa’s #plume/water-vapor signatures cited here, nor Saur et al. or much from the Europa #SpacePlasma community.
Not fatal for their thermo-fluid model I guess, but given the broader claim about limited #ocean–#surface exchange, it feels like a gap in the framing.
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@Umbertogaetani One thing that surprised me: I don’t see Roth et al.’s #HST work on #Europa’s #plume/water-vapor signatures cited here, nor Saur et al. or much from the Europa #SpacePlasma community.
Not fatal for their thermo-fluid model I guess, but given the broader claim about limited #ocean–#surface exchange, it feels like a gap in the framing.
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@Umbertogaetani Their simulations suggest that #water rising through narrow dykes would freeze too quickly to supply the volumes needed for features such as chaos terrain, pits, domes or ridges. #Turbulence makes this worse by enhancing heat loss, supercooling the water, producing frazil ice, and clogging the dyke.
If correct, shallow liquid reservoirs on #Europa may form more by local in situ melting than by direct #ocean-to-surface exchange.
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@Umbertogaetani Their simulations suggest that #water rising through narrow dykes would freeze too quickly to supply the volumes needed for features such as chaos terrain, pits, domes or ridges. #Turbulence makes this worse by enhancing heat loss, supercooling the water, producing frazil ice, and clogging the dyke.
If correct, shallow liquid reservoirs on #Europa may form more by local in situ melting than by direct #ocean-to-surface exchange.
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RE: https://mastodon.uno/@Umbertogaetani/117077488353005365
🌖🌊 Interesting new #NatureAstronomy paper on #Europa’s #subsurface #ocean:
Ojha, Barik & Buffo argue that direct liquid-water transport from Europa’s deep ocean into shallow subsurface reservoirs may be much more limited than often assumed.
🌍 https://doi.org/10.1038/s41550-026-02918-2
Thanks @Umbertogaetani for sharing ✌️
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RE: https://mastodon.uno/@Umbertogaetani/117077488353005365
🌖🌊 Interesting new #NatureAstronomy paper on #Europa’s #subsurface #ocean:
Ojha, Barik & Buffo argue that direct liquid-water transport from Europa’s deep ocean into shallow subsurface reservoirs may be much more limited than often assumed.
🌍 https://doi.org/10.1038/s41550-026-02918-2
Thanks @Umbertogaetani for sharing ✌️
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This is the exciting part: #KHI can mix magnetized and non-magnetized #plasma, drive #turbulence, transport mass/energy/momentum/ #MagneticFlux, and may contribute to small-scale #magnetic braiding, thus one route by which free #MagneticEnergy is built up in the solar #atmosphere.
That makes them relevant to the long-standing puzzle of why the #corona is heated to millions of kelvin while the visible surface is only ~5,800 K. 😎🔥
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This is the exciting part: #KHI can mix magnetized and non-magnetized #plasma, drive #turbulence, transport mass/energy/momentum/ #MagneticFlux, and may contribute to small-scale #magnetic braiding, thus one route by which free #MagneticEnergy is built up in the solar #atmosphere.
That makes them relevant to the long-standing puzzle of why the #corona is heated to millions of kelvin while the visible surface is only ~5,800 K. 😎🔥
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For the first time, #KelvinHelmholtzInstabilities 🌀 have been directly observed in the #Sun’s #photosphere ☀️🔭
#DKIST images reveal tiny #vortex-like structures at the edges of #MagneticFlux concentrations. #MHD simulations reproduce them and show that shear flows along these #magnetic boundaries trigger the instability.
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For the first time, #KelvinHelmholtzInstabilities 🌀 have been directly observed in the #Sun’s #photosphere ☀️🔭
#DKIST images reveal tiny #vortex-like structures at the edges of #MagneticFlux concentrations. #MHD simulations reproduce them and show that shear flows along these #magnetic boundaries trigger the instability.
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“A #telescope in #Chile has captured evidence of the impact caused by part of a SpaceX #Falcon9 rocket slamming into the moon while travelling at 8,690km/h (5,400mph).
The European Southern Observatory’s (ESO) Very Large Telescope observed “spectral lines” – a colourful illustration of the #sodium and #lithium gas – in the plume of #LunarDust stirred up by the impact.
The #ESO telescope recorded these “chemical fingerprints” of the plume, which were visible for five to 10 minutes, the #observatory said. The #plume measured a few tens of kilometres in size, according to #CarlSchmidt, an astronomer from #BostonUniversity’s Center for #SpacePhysics.”
#Moon <https://www.theguardian.com/science/2026/aug/06/spacex-rocket-crash-into-moon-impact>
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“A #telescope in #Chile has captured evidence of the impact caused by part of a SpaceX #Falcon9 rocket slamming into the moon while travelling at 8,690km/h (5,400mph).
The European Southern Observatory’s (ESO) Very Large Telescope observed “spectral lines” – a colourful illustration of the #sodium and #lithium gas – in the plume of #LunarDust stirred up by the impact.
The #ESO telescope recorded these “chemical fingerprints” of the plume, which were visible for five to 10 minutes, the #observatory said. The #plume measured a few tens of kilometres in size, according to #CarlSchmidt, an astronomer from #BostonUniversity’s Center for #SpacePhysics.”
#Moon <https://www.theguardian.com/science/2026/aug/06/spacex-rocket-crash-into-moon-impact>
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This made me very happy to read: An #asteroid has been named after Susanne Pfalzner.
I attended her lectures on #ComputationalAstrophysics and #StarFormation during my studies, and she later served as the 2nd examiner for my Master’s thesis. She is an outstanding scientist and lecturer, and this is such a well-deserved honor. My warmest congratulations to her! 👏👏👏
🌍 https://www.fz-juelich.de/en/jsc/news/news-items/news-flashes/2026/asteroid-pfalzner
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This made me very happy to read: An #asteroid has been named after Susanne Pfalzner.
I attended her lectures on #ComputationalAstrophysics and #StarFormation during my studies, and she later served as the 2nd examiner for my Master’s thesis. She is an outstanding scientist and lecturer, and this is such a well-deserved honor. My warmest congratulations to her! 👏👏👏
🌍 https://www.fz-juelich.de/en/jsc/news/news-items/news-flashes/2026/asteroid-pfalzner
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The solar wind gradually decelerates as it travels toward the edge of the solar system due to continuous interactions with incoming interstellar neutral gas particles.
#Heliophysics #Astrophysics #SpacePhysics #sflorg
https://www.sflorg.com/2026/06/heli06292601.html -
The solar wind gradually decelerates as it travels toward the edge of the solar system due to continuous interactions with incoming interstellar neutral gas particles.
#Heliophysics #Astrophysics #SpacePhysics #sflorg
https://www.sflorg.com/2026/06/heli06292601.html -
#StormWall is a proposed space-based defense system designed to temporarily fortify Earth's magnetosphere against damaging space weather, such as solar flares and geomagnetic storms. By releasing specific chemical elements at the edge of Earth's protective magnetic bubble, the system aims to deflect harmful solar energy safely past the planet.
#Heliophysics #SpacePhysics #AerospaceEngineering #Geoengineering #sflorg
https://www.sflorg.com/2026/06/heli06032601.html -
#StormWall is a proposed space-based defense system designed to temporarily fortify Earth's magnetosphere against damaging space weather, such as solar flares and geomagnetic storms. By releasing specific chemical elements at the edge of Earth's protective magnetic bubble, the system aims to deflect harmful solar energy safely past the planet.
#Heliophysics #SpacePhysics #AerospaceEngineering #Geoengineering #sflorg
https://www.sflorg.com/2026/06/heli06032601.html -
Today at the institute, on my way to the kitchen, I passed the current issue of #LaborJournal. Its cover story is about #astrobiology on #IcyMoons. Funny to see my old #SpacePhysics PhD topic, icy moons, reappear here in #Neuroscience. The loop seems to close after all 😅
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Today at the institute, on my way to the kitchen, I passed the current issue of #LaborJournal. Its cover story is about #astrobiology on #IcyMoons. Funny to see my old #SpacePhysics PhD topic, icy moons, reappear here in #Neuroscience. The loop seems to close after all 😅
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I love the detail in the cover image, showing white #DNA strands and #molecules erupting from #Enceladus’ #cryovolcanoes ❄️🌋
#SpacePhysics #Astrobiology #Neuroscience #Saturn #cassinihuygens #cassini
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I love the detail in the cover image, showing white #DNA strands and #molecules erupting from #Enceladus’ #cryovolcanoes ❄️🌋
#SpacePhysics #Astrobiology #Neuroscience #Saturn #cassinihuygens #cassini
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Today, on my way to the kitchen at the institute, I passed the current issue of "Labor Journal" (Lab Journal). Its cover story is about #astrobiology on #IcyMoons. Found it a bit funny to see this topic again here. I worked on icy moons back when I was still in #SpacePhysics. Now, in #Neuroscience, the loop seems to close after all 😅
#LaborJournal #enceladus #ganymede #jupiter #saturn #SolarSystem
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Today, on my way to the kitchen at the institute, I passed the current issue of "Labor Journal" (Lab Journal). Its cover story is about #astrobiology on #IcyMoons. Found it a bit funny to see this topic again here. I worked on icy moons back when I was still in #SpacePhysics. Now, in #Neuroscience, the loop seems to close after all 😅
#LaborJournal #enceladus #ganymede #jupiter #saturn #SolarSystem
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Uzayda bir kalemi kendi uydu gibi yapabilir miyiz? Kalemin hareketi milimetrenin milyonda biri hassasiyeti gerektiriyor—mikro-gravitasyon dünyasında küçük nesneler kendi çekimiyle yörüngede kalabilir. Bu ilginç? 🚀
🚩 #SpacePhysics #Orbit #Microgravity #DIYSpace #AstroInnovation #ScienceExploration
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The revised analysis does not fully rule out #Europa plumes, but it substantially weakens the original #HST #Lyα evidence. After accounting for Europa’s extended #hydrogen #exosphere and improved background modeling, the previously reported localized excess emission is no longer statistically compelling.
📝 https://doi.org/10.1051/0004-6361/202659406
🧵2/2
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The revised analysis does not fully rule out #Europa plumes, but it substantially weakens the original #HST #Lyα evidence. After accounting for Europa’s extended #hydrogen #exosphere and improved background modeling, the previously reported localized excess emission is no longer statistically compelling.
📝 https://doi.org/10.1051/0004-6361/202659406
🧵2/2
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🌖🔭Roth, Retherford, Saur et al revise their 2014 paper: In a reanalysis of 23 #HST/ #STIS #Lyα observations, the authors revisit & revise their earlier #Europa water plume interpretation.
With improved disk positioning & inclusion of a #hydrogen-#exosphere model, the previously reported localized Lyα excess becomes substantially less significant & may be consistent with noise. The data instead robustly support a persistent atomic H exosphere.
🧵1/n
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🌖🔭Roth, Retherford, Saur et al revise their 2014 paper: In a reanalysis of 23 #HST/ #STIS #Lyα observations, the authors revisit & revise their earlier #Europa water plume interpretation.
With improved disk positioning & inclusion of a #hydrogen-#exosphere model, the previously reported localized Lyα excess becomes substantially less significant & may be consistent with noise. The data instead robustly support a persistent atomic H exosphere.
🧵1/n
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RE: https://fosstodon.org/@AkaSci/116597943953403803
New #space mission #SMILE will launch today (May 19, 7:52 UTC). The #SolarWind #Magnetosphere #Ionosphere Link Explorer, a collaboration between #ESA and the #Chinese Academy of Sciences #CAS, will study #Earth‘s #magnetosphere in soft X-rays and #UV to better understand the dynamic interaction between both.
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RE: https://fosstodon.org/@AkaSci/116597943953403803
New #space mission #SMILE will launch today (May 19, 7:52 UTC). The #SolarWind #Magnetosphere #Ionosphere Link Explorer, a collaboration between #ESA and the #Chinese Academy of Sciences #CAS, will study #Earth‘s #magnetosphere in soft X-rays and #UV to better understand the dynamic interaction between both.
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RE: https://mastodon.social/@astropic/116568569046179797
My old PhD companion.
#Ganymede #SpacePhysics -
RE: https://mastodon.social/@astropic/116568569046179797
My old PhD companion.
#Ganymede #SpacePhysics -
NEW METHOD PROMISES EASIER ACCESS TO NEAR-EARTH OBJECTS
How does the new asteroid trajectory method reduce energy costs for space missions? Learn how researchers are making it easier to reach near-Earth objects.
#spaceexploration, #asteroidmining, #nasa, #spacephysics, #scienceupdate
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Researchers have found a new way to calculate paths to asteroids. This method uses less energy than older models used by NASA.
#spaceexploration, #asteroidmining, #nasa, #spacephysics, #scienceupdate
https://newsletter.tf/new-asteroid-trajectory-method-2026/ -
RE: https://wisskomm.social/@GermanAstroSoc/116210846409366882
Congratulations to Heike Rauer! 🎉
I had the pleasure of experiencing her work firsthand in a colloquium at my former institute while I was still a student, and I remember her as an outstanding #planetary scientist. A very well-deserved recognition!
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RE: https://wisskomm.social/@GermanAstroSoc/116210846409366882
Congratulations to Heike Rauer! 🎉
I had the pleasure of experiencing her work firsthand in a colloquium at my former institute while I was still a student, and I remember her as an outstanding #planetary scientist. A very well-deserved recognition!
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A personal highlight for me was of course the full-scale model of the #HubbleSpaceTelescope ❤️🔭
#Hubble #Smithsonian #HST #Ganymede #Spectroscopy #STIS #Aurora #Jupiter #Museum #SpacePhysics #PlasmaPhysics #Plasma #Space #Astronomy
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A personal highlight for me was of course the full-scale model of the #HubbleSpaceTelescope ❤️🔭
#Hubble #Smithsonian #HST #Ganymede #Spectroscopy #STIS #Aurora #Jupiter #Museum #SpacePhysics #PlasmaPhysics #Plasma #Space #Astronomy
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I seem to be in a bit of a #space mood 🪐🔭 at the moment 😅, so I remembered that I once visited the #Smithsonian National Air and Space Museum in Washington, DC and wrote a short blog post about it. I thought I would share it again here:
🌍 https://www.fabriziomusacchio.com/blog/2021-05-03-smithsonian/
#Museum #SpacePhysics #PlanetaryScience #Astronomy #Aviation #Spaceflight #WashingtonDC #Voyager #NewHorizons #Apollo #ApolloMission #Soyuz #Moon
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I seem to be in a bit of a #space mood 🪐🔭 at the moment 😅, so I remembered that I once visited the #Smithsonian National Air and Space Museum in Washington, DC and wrote a short blog post about it. I thought I would share it again here:
🌍 https://www.fabriziomusacchio.com/blog/2021-05-03-smithsonian/
#Museum #SpacePhysics #PlanetaryScience #Astronomy #Aviation #Spaceflight #WashingtonDC #Voyager #NewHorizons #Apollo #ApolloMission #Soyuz #Moon
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@MPIfR_Bonn And here's the link to the #Astropeiler #Stockert ( @astropeiler) post:
🌍 https://www.fabriziomusacchio.com/blog/2021-05-01-astropeiler_stockert/
#SpacePhysics #Observatory #Telescope #RadioAstronomy #Astronomy #MPIfR
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@MPIfR_Bonn And here's the link to the #Astropeiler #Stockert ( @astropeiler) post:
🌍 https://www.fabriziomusacchio.com/blog/2021-05-01-astropeiler_stockert/
#SpacePhysics #Observatory #Telescope #RadioAstronomy #Astronomy #MPIfR
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✨🔭 If you're interested in learning more about #SpaceScience in the region, I have two older posts about a visit I made with my former institute to the #Effelsberg #RadioTelescope ( @MPIfR_Bonn) and the #Stockert radio telescope ( #Astropeiler).
Here's the link to the Effelsberg post:
🌍 https://www.fabriziomusacchio.com/blog/2021-05-01-effelsberg/
#SpacePhysics #Observatory #Telescope #RadioAstronomy #Astronomy #MPIfR
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✨🔭 If you're interested in learning more about #SpaceScience in the region, I have two older posts about a visit I made with my former institute to the #Effelsberg #RadioTelescope ( @MPIfR_Bonn) and the #Stockert radio telescope ( #Astropeiler).
Here's the link to the Effelsberg post:
🌍 https://www.fabriziomusacchio.com/blog/2021-05-01-effelsberg/
#SpacePhysics #Observatory #Telescope #RadioAstronomy #Astronomy #MPIfR
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✨🔭 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:
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✨🔭 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:
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🛰️ 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.
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🛰️ 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.
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🛰️ New paper by Němec et al.: After analyzing ~10 years of #MAVEN wave data, the authors report a #lightning-like electromagnetic #whistler signal in the #Martian #ionosphere. Its frequency dispersion matches theoretical propagation through #Mars’ ionosphere and crustal magnetic fields, suggesting that electrical discharges may occur in the Martian #atmosphere.
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🛰️ New paper by Němec et al.: After analyzing ~10 years of #MAVEN wave data, the authors report a #lightning-like electromagnetic #whistler signal in the #Martian #ionosphere. Its frequency dispersion matches theoretical propagation through #Mars’ ionosphere and crustal magnetic fields, suggesting that electrical discharges may occur in the Martian #atmosphere.
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✨🔭 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.
#auroq #SpacePhysics #Jupiter #PlasmaPhysics #Juno #JunoSpacecraft #magnetosphere
Thanks @Umbertogaetani for sharing 🙏 https://mastodon.uno/@Umbertogaetani/116113873863038999
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✨🔭 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.
#auroq #SpacePhysics #Jupiter #PlasmaPhysics #Juno #JunoSpacecraft #magnetosphere
Thanks @Umbertogaetani for sharing 🙏 https://mastodon.uno/@Umbertogaetani/116113873863038999
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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.
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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.
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#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
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Aurora borealis visible in northeast Kansas on 11.11.25
Four (or two) second exposure with ISO 3200 on my Galaxy S20.
#auroraborealis #northernlights #nightskyphotography #Kansas #solarstorm #spacephysics #astronomy #heliophysics