Le vent solaire, ce flux de particules chargées émis par notre étoile, peut atteindre jusqu'à 800 km/s ! Mais qu'est-ce qui peut accélérer autant ces particules ?
En analysant les données récoltées par la sonde #ParkerSolarProbe de la #Nasa, qui s'est rapprochée à 8 millions de km du Soleil, des chercheuses et chercheurs pensent avoir trouvé le coupable : un mécanisme de reconnexions magnétiques intermittentes.
À lire dans mon nouvel article pour Pour La Science :
https://www.pourlascience.fr/sd/astrophysique/la-source-du-vent-solaire-rapide-identifiee-25450.php
📸 Nasa

We finally know how the mysterious #Geminid #meteorshower originated
#NASA scientists who analyzed data from the space agency’s #ParkerSolarProbe have now finally found the most likely answer to the mystery of how the #Geminids formed: a catastrophic event. “The Geminids may have formed via a more violent, catastrophic destruction of bodies that transited very near to the Sun,” the scientists said in a study published in The Planetary Science Journal.
https://arstechnica.com/science/2023/06/we-finally-know-how-the-mysterious-geminid-meteor-shower-originated/

Why studying the #Sun is good for you ..."I'm a big fan of heliophysics. I met my wife at the launch party for #ParkerSolarProbe" – Brent Blevins, staff director of the space subcommittee of the #HouseScienceCommittee, speaking on a panel during the Space Weather Enterprise Forum in Washington Thursday. From https://mailchi.mp/spacenews/delta-4-heavy-launch-for-the-nro-scrubbed-intelsat-signs-up-again-with-spacelogistics-ssa-startups-raise-funding-181020?e=c19a1ae8a9

Oh, Parker Solar Probe, grand and bright,
Your mission, to capture cosmic flight.
You've taken the bravest of steps
And found what's next
You've seen the ultimate sight!

#parkersolarprobe #solarwind #spaceexploration #ode #poetry

https://arstechnica.com/science/2023/06/parker-solar-probe-images-the-launch-of-the-solar-wind/

Ars Technica: Parker Solar Probe images the launch of the solar wind https://arstechnica.com/?p=1948679 #Tech #arstechnica #IT #Technology #ParkerSolarProbe #astrophysics #heliophysics #astronomy #Science #NASA #Sun

Parker Solar Probe images the launch of the solar wind - Enlarge / An artist's depiction of the Parker Solar Probe, along with i... - https://arstechnica.com/?p=1948679 #parkersolarprobe #astrophysics #heliophysics #astronomy #science #nasa #sun

Parker Solar Probe’s Confirmation of Interchange Reconnection Being the Source of Fast Solar Wind - Artist rendition of the Parker Solar Probe. (Credit: NASA)
Although experimental v... - https://hackaday.com/2023/06/14/parker-solar-probes-confirmation-of-interchange-reconnection-being-the-source-of-fast-solar-wind/ #parkersolarprobe #solarwind #science #space #news

Carolyn Collins Petersen - Parker Solar Probe Flies Close Enough to the Sun to See the Source of the Fast Solar Wind:

https://www.universetoday.com/161891/parker-solar-probe-flies-close-enough-to-the-sun-to-see-the-source-of-the-fast-solar-wind/

#ParkerSolarProbe #PSP #Parker #Sun #FastSolarWind #SolarWind #CoronalHoles #Convection #Supergranulation #SpaceWeather #SolarPhysics #Astrophysics #Astronomy

#NASA may have found one of the sources of #SolarWind

#sun #space #science #ParkerSolarProbe

https://bgr.com/science/nasa-may-have-found-one-of-the-sources-of-solar-wind/

Interchange reconnection as the source of the fast solar wind within #CoronalHoles: https://www.nature.com/articles/s41586-023-05955-3 -> #ParkerSolarProbe flies into the fast #SolarWind and finds its source: https://news.berkeley.edu/2023/06/07/parker-solar-probe-flies-into-the-fast-solar-wind-and-finds-its-source/ / GONG Facilities Helped Parker Solar Probe In Finding Source of Solar Winds: https://nso.edu/blog/nsfs-gong-facilities-helped-parker-solar-probe-in-finding-source-of-solar-winds/

Interchange reconnection as the source of the fast solar wind within #CoronalHoles: https://www.nature.com/articles/s41586-023-05955-3 -> #ParkerSolarProbe flies into the fast #SolarWind and finds its source: https://news.berkeley.edu/2023/06/07/parker-solar-probe-flies-into-the-fast-solar-wind-and-finds-its-source/

While you enjoy a cold one on #StPatrickDay spare a thought for the #NASA Parker Solar Probe spacecraft which will brave blistering temperatures to make its 15th close pass of the sun today! Cheers! #Space #parkersolarprobe #Science #scicomm https://www.space.com/parker-solar-probe-sun-flyby-perihelion-15

🛰️ Mit Daten der #ParkerSolarProbe Raumsonde der #NASA wird u. a. die Corona der Sonne und die Entstehung von #Sonnenwind untersucht.

☀️ Heute passiert die Sonde den sonnennächsten Punkt in diesem Umlauf und wird dabei viele wichtige Messungen durchführen.

📡 Unterstützung erhält sie dieses Mal auch von unserem Radioteleskop SFX, das damit seine erste richtige Messkampagne bestreitet.

#Sonne #SolarFlux #SolarProbe

Hace 5 años.. #nasa #parkersolarprobe

An instrument on NASA’s #ParkerSolarProbe was powered off prematurely by the spacecraft autonomy system on Feb. 12. It happened during the application of an approved flight software patch to the Energetic Particle Instrument (EPI-Hi). The instrument will remain off for several weeks as the geometry between the probe and the Sun, and also the solar radio frequency interference will prevent a good uplink: https://blogs.nasa.gov/parkersolarprobe/2023/02/17/nasa-notes-parker-solar-probe-instrument-temporarily-offline/

NASA's Parker Solar Probe has already completed another pass by the Sun. It's been winding its orbits tighter & faster (green) to get to its current, Icarus-like path (red). http://parkersolarprobe.jhuapl.edu/News-Center/Show-Article.php?articleID=182 #ParkerSolarProbe #Sun https://t.co/LnZxpuYUcu

Look closely at the images from the Parker Solar Probe and you can see a few small comets & 6 planets, including Earth. You can also see the dusty trail of Phaethon, a strange "rock comet." HT @SungrazerComets@twitter.com
#ParkerSolarProbe

Spectacular animation of #ParkerSolarProbe latest-processed close flyby
https://nitter.42l.fr/SungrazerComets/status/1618295489665073153

The data is available at https://wispr.nrl.navy.mil/encounter13-summary , with a 90MB mp4 that has a less-strobing, smoother version.

I wonder if our img processing wizards can even do it with less to no flicker, so that it is social-media-friendly? Cc: @Landru79 , @andrealuck

Our review paper, led by Nour Raouafi, on results from the first few years of the #ParkerSolarProbe mission is now available in preprint at https://arxiv.org/abs/2301.02727

#nasa and their mission to the #sun launched 2018, it will reach its orbit 2024 :blobcatscience: #parkersolarprobe "employs a combination of in situ measurements and imaging to revolutionize our understanding of the corona and expand our knowledge of the origin and evolution of the solar wind"
It reminds me Sunshine, a dystopian #scifi #movie
:blobcatfearful:

https://www.nasa.gov/content/goddard/parker-solar-probe-humanity-s-first-visit-to-a-star