[A complex #MagneticField detected on the surface of the star #vega ] Observations made using the SOPHIE spectrograph at the Haute Provence Observatory, and spectropolarimetry with the Narval and Neo-Narval instruments at the Bernard Lyot Telescope at the Pic du Midi Observatory, have enabled IRAP researchers to detect the coexistence, on the surface of the star Vega, of a complex magnetic field : one described as #fossil, the second as #variable : https://www.irap.omp.eu/en/2025/10/detection-of-a-complex-magnetic-field-on-thesurface-of-the-intermediate-mass-star-vega/

#astrophysics

Rogue Planet Aurora: Storms and 1500C Heat? https://theblogofscience.com/rogue-planet-aurora-storms-and-1500c-heat/

#RoguePlanet #Aurora #Astrophysics #InterstellarSpace #Exoplanets #PlanetaryScience #MagneticField #BrownDwarf #Astrobiology #SpaceDiscovery

The Mystery of the CMB Cold Spot: A Portal to a Parallel Universe? https://theblogofscience.com/evidence-for-a-parallel-universe/

#Astronomy
#SpaceDiscovery
#CosmicPhenomena
#PlanetaryScience
#SpaceExploration
#Astrophysics
#Universe
#Cosmos
#NASA
#SpaceTelescope
#Atmosphere
#Aurora
#BrownDwarf
#Exoplanet
#JamesWebb
#MagneticField
#RoguePlanet
#SilicateClouds
#SIMP0136
#SpaceWeather

The Moon Is Rusting – And Earth's Oxygen Might Be to Blame https://theblogofscience.com/the-moon-is-rusting-and-earths-oxygen-might-be-to-blame/

#Astronomy
#SpaceDiscovery
#CosmicPhenomena
#PlanetaryScience
#SpaceExploration
#Astrophysics
#Universe
#Cosmos
#NASA
#SpaceTelescope
#Atmosphere
#Aurora
#BrownDwarf
#Exoplanet
#JamesWebb
#MagneticField
#RoguePlanet
#SilicateClouds
#SIMP0136
#SpaceWeather

Rogue Planet SIMP-0136: Auroral Storms and 1,500°C Heat https://theblogofscience.com/rogue-planet-simp-0136-auroral-storms-and-1500c-heat/

#Astronomy
#SpaceDiscovery
#CosmicPhenomena
#PlanetaryScience
#SpaceExploration
#Astrophysics
#Universe
#Cosmos
#NASA
#SpaceTelescope
#Atmosphere
#Aurora
#BrownDwarf
#Exoplanet
#JamesWebb
#MagneticField
#RoguePlanet
#SilicateClouds
#SIMP0136
#SpaceWeather

Striations on the Sun

One of the perpetual challenges for fluid dynamicists is the large range of scales we often have to consider. For something like a cloud, that means tracking not only the kilometer-size scale of the cloud, but the large eddies that are about 100 meters across and smaller ones all the way down to the scale of millimeters. In turbulent flows, all of these scales matter. That problem is even harder for something like the Sun, where the sizes range from hundreds of thousands of kilometers down to only a few kilometers.

It’s those fine-scale features that we see captured here. This colorized image shows light and dark striations on solar granules. Scientists estimate that each one is between 20 and 50 kilometers wide. They’re reflections of the small-scale structure of the Sun’s magnetic field as it shapes the star’s hot, conductive plasma. (Image credit: NSF/NSO/AURA; research credit: D. Kuridze et al.; via Gizmodo)

#fluidDynamics #magneticField #magnetohydrodynamics #physics #science #solarDynamics #sun #turbulence

Did you know Earth's magnetic field isn't just constant? It drifts and even FLIPS over time! 🌍⚡ This 'geomagnetic reversal' has happened many times—last 780,000 years ago. When poles swap, the field weakens, exposing us to extra radiation. Could we be due for another flip? The field is weakening now, sparking urgent research! #EarthScience #GeomagneticReversal #MagneticField #SolarRadiation #PlanetEarth #NatureMysteries (1/1)

A New Plasma Wave for Jupiter

Jupiter‘s North Pole has a powerful magnetic field combined with plasma that has unusually low electron densities. This combination, researchers found, gives rise to a new type of plasma wave.

Ions in a magnetic field typically move parallel to magnetic field lines in Langmuir waves and perpendicularly to the field lines in Alfvén waves — with each wave carrying a distinctive frequency signature. But in Jupiter’s strong magnetosphere, low-density plasma does something quite different: it creates what the team is calling an Alfvén-Langmuir wave — a wave that transitions from Alfvén-like to Langmuir-like, depending on wave number and excitation from local beams of electrons.

Although this is the first time such plasma behavior has been observed, the team suggests that other strongly-magnetized giant planets — or even stars — could also form these waves near their poles. (Image credit: NASA / JPL-Caltech / SwR I/ MSSS/G. Eason; research credit: R. Lysak et al.; via APS)

#fluidDynamics #Jupiter #magneticField #magnetohydrodynamics #physics #plasma #science #waves

Celestial navigation of a native moth

During their annual 1,000-kilometre journey to cool inland caves the Bogong moths have to rest in human hubs. There they get vacuumed and sprayed as pests with pesticides or just squashed by 'progress'. Few of the endangered species make it after their round-the-world journey to return home to Australia’s highest mountain range.

"Our results suggest that Bogong moths use stellar cues and the Earth’s magnetic field to create a robust compass system for long-distance nocturnal navigation towards a specific destination."
>>
Bogong moths use a stellar compass for long-distance navigation at night
https://www.nature.com/articles/s41586-025-09135-3
#insects #Bogong #moths #CelestialNavigation #compass #AgrotisInfusa #MagneticField #MilkyWay #EndangeredSpecies #biodiversity

Dreaming of a Magnetic Field

Do you feel the magnetic field?

Do you dream of of it?

I sure do!

… having completed this project:

Dreaming of a Magnetic Field by elkement 2025 (Blue-green edition). Flow lines of the magnetic field of a current loop, plus essential physics equations.

These are the flow lines of the magnetic generated by a circular current loop. They look almost like ellipses, embracing an (almost) torus. Each field line encircles the tiny current loop in the center.

The curves look simple, as if […]

https://elkement.art/2025/08/28/dreaming-of-a-magnetic-field/

Written In The Stars: Bogong Moths Migrate To Hidden Caves By Following The Stars, study out of Lund University, published by Nature

#SciComm by @GrrlScientist

#BogongMoth #insects #migration #behavior #evolution #StarMap #MagneticField #Neurobiology https://www.forbes.com/sites/grrlscientist/2025/08/27/written-in-the-stars-bogong-moths-migrate-to-hidden-caves-by-following-the-stars/

Written In The Stars: Bogong Moths Migrate To Hidden Caves By Following The Stars, study out of Lund University, published by Nature

#SciComm by @grrlscientist

#BogongMoth #insects #migration #behavior #evolution #StarMap #MagneticField #Neurobiology https://www.forbes.com/sites/grrlscientist/2025/08/27/written-in-the-stars-bogong-moths-migrate-to-hidden-caves-by-following-the-stars/

This is very handy for magnetic compass users in UK 🤓 :

https://intermagnet.bgs.ac.uk/data_service/models_compass/gma_calc.html

#Maps #MagneticField #Compass

First real-time observation of two-dimensional melting process: Researchers at #MainzUniversity unveil new insights into magnetic vortex structures 👉 https://press.uni-mainz.de/first-real-time-observation-of-two-dimensional-melting-process/

#skyrmions #MagneticField #DataStorage #physics #TopDyn

First real-time observation of two-dimensional melting process: Researchers at #MainzUniversity unveil new insights into magnetic vortex structures 👉 https://press.uni-mainz.de/first-real-time-observation-of-two-dimensional-melting-process/

#skyrmions #MagneticField #DataStorage #physics #TopDyn
https://nachrichten.idw-online.de/2025/08/04/first-real-time-observation-of-two-dimensional-melting-process

#SpaceX launches a pair of #NASA #satellites to probe the origins of #spaceweather
Twin #spacecraft are part of #TRACERS mission, which will spend at least a year measuring #plasma conditions in narrow regions of #Earth's #magneticfield known as polar cusps. These regions are located over the poles. They play an important but poorly understood role in creating colorful auroras as plasma streaming out from the Sun interacts with the magnetic field surrounding Earth.
https://arstechnica.com/space/2025/07/spacex-launches-a-pair-of-nasa-satellites-to-probe-the-origins-of-space-weather/

Sound of #Earth's Flipping #MagneticField Is an Unforgettable Horror
Combining the satellite data with evidence of magnetic field line movements on Earth, geoscientists mapped the Laschamps event and represented it using natural noises like the creaking of wood and the crashing of colliding rocks.
The resulting compilation – unveiled in 2024 by the Technical University of Denmark and the German Research Center for Geosciences – is unlike anything you've ever heard.
https://www.sciencealert.com/sound-of-earths-flipping-magnetic-field-is-an-unforgettable-horror

#Astronomers Spot Unusual #MagneticField Around A Massive Young #Protostar

https://www.universetoday.com/articles/astronomers-spot-unusual-magnetic-field-around-a-massive-young-protostar

#Jupiter was formerly twice its current size and had a much stronger #magneticfield, study says
A new study reveals that about 3.8 million years after the solar system's first solids formed, Jupiter was twice its current size with a magnetic field 50 times stronger, profoundly influencing the structure of the early solar system.
https://phys.org/news/2025-05-jupiter-current-size-stronger-magnetic.html

Glimpses of Coronal Rain

Despite its incredible heat, our sun‘s corona is so faint compared to the rest of the star that we can rarely make it out except during a total solar eclipse. But a new adaptive optic technique has given us coronal images with unprecedented detail.

These images come from the 1.6-meter Goode Solar Telescope at Big Bear Solar Observatory, and they required some 2,200 adjustments to the instrument’s mirror every second to counter atmospheric distortions that would otherwise blur the images. With the new technique, the team was able to sharpen their resolution from 1,000 kilometers all the way down to 63 kilometers, revealing heretofore unseen details of plasma from solar prominences dancing in the sun’s magnetic field and cooling plasma falling as coronal rain.

The team hope to upgrade the 4-meter Daniel K. Inouye Solar Telescope with the technology next, which will enable even finer imagery. (Image credit: Schmidt et al./NJIT/NSO/AURA/NSF; research credit: D. Schmidt et al.; via Gizmodo)

#flowVisualization #fluidDynamics #magneticField #magnetohydrodynamics #physics #plasma #science #solarDynamics #stellarEvolution