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#ESO:
"
Seltsame Winde liefern bislang stärksten Hinweis auf magnetische Aktivität in Exoplaneten
"
".. einige Planeten außerhalb unseres Sonnensystems Magnetfelder aufweisen könnten. Mithilfe des ..VLT der .. ESO und des Gemini-North-Teleskops haben die Forschenden die Windgeschwindigkeiten auf sieben sehr heißen, Jupiter-ähnlichen Exoplaneten ermittelt. .."
https://www.eso.org/public/germany/news/eso2606/?nolang
2.6.2026
#Astronomie #ESPRESSO #Exoplanet #Gasriese #GeminiNorth #Magnetfeld #Planetologie #VLT #Wind
Seltsame Winde liefern bislang stärksten Hinweis auf magnetische Aktivität in Exoplaneten
Ein Team von Astronom*innen hat den bislang eindeutigsten Beweis dafür gefunden, dass einige Planeten außerhalb unseres Sonnensystems Magnetfelder aufweisen könnten. Mithilfe des Very Large Telescope (VLT) der Europäischen Südsternwarte (ESO) und des Gemini-North-Teleskops haben die Forschenden die Windgeschwindigkeiten auf sieben sehr heißen, Jupiter-ähnlichen Exoplaneten ermittelt. Die Beobachtungen ergaben, dass die Winde auf diesen Planeten höchstwahrscheinlich von Magnetfeldern beeinflusst werden. Damit gelang erstmals der zuverlässige Nachweis von Magnetismus auf Planeten außerhalb des Sonnensystems.
Gemini North tracks changing glow of interstellar Comet 3IATLAS
https://atlas.whatip.xyz/post.php?slug=gemini-north-tracks-changing-glow-of-interstellar-comet-3iatlas"Unveiling the Cosmic Dance: Gemini North's Colorful Encounter with Interstellar Comet 3I/ATLAS"
#space #astronomy #interstellar #comet3iatlas #gemininorth
Gemini North tracks changing glow of interstellar Comet 3IATLAS
Exciting news from the world of astronomy! The interstellar comet 3I/ATLAS is capturing attention once again as Gemini North provides stunning new color images. Recently emerging from behind the Sun o...
Finally an RGB image of comet #3IATLAS from images taken by #GeminiNorth during the 26 November #shadowTheScientists session: https://noirlab.edu/public/news/noirlab2532/ - the coma has become bluer due to more gas emission. Also published today: an X-ray image by XMM-Newton at https://www.esa.int/ESA_Multimedia/Images/2025/12/XMM-Newton_sees_comet_3I_ATLAS_in_X-ray_light with explanations in http://www.cbat.eps.harvard.edu/iau/cbet/005600/CBET005646.txt which also contains more 3I news.
Meanwhile the paper https://iopscience.iop.org/article/10.3847/2515-5172/ae2915 claims an upper limit for 3I's nucleus diameter of only some 750 meters from the measured non-gravitational acceleration (NGA) parameters: that would be waaay more stringent than the 5.6 km upper limit from early Hubble observations reported in https://iopscience.iop.org/article/10.3847/2041-8213/adf8d8 (where also a lower limit of 440 meters is stated).
And here is a recording of the
#ShadowTheScientists live observation of interstellar comet
#3IATLAS with
#GeminiNorth a few hours ago:
https://www.youtube.com/watch?v=cW0chiPZyYM
Nov 26, 2025: Exploring Comet 3I/ATLAS - A Rare Encounter with an Interstellar Visitor
And here is what comet
#3IATLAS looks like for the
#geminiNorth Integral Field Unit (IFU) taking numerous spectra from points across the coma - from
#ShadowTheScientistsWhat a
#GeminiNorth #3IATLAS spectrum looks like - as raw as it gets, from the
#shadowTheScientists session. See
https://www.astronomerstelegram.org/?read=17503 for a pre-perihelion spectrum.
The
#GeminiNorth telescopes is observing the interstellar comet
#3IATLAS right now: here is the acquisition image from moments ago, spectra to be taken now - from the
#ShadowTheScientists session.
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3i/Atlas
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