Aurora isn't just beautiful, it also impacts radio communications! Looking at HF/VHF propagation during the peak of the recent G4 #solarstorm, we can see #auroral propagation occurs quite far south even during the daylight hours in Europe and the USA.
An intriguing pair of interacting galaxies, M51 is the 51st entry in Charles Messier's famous catalog. Perhaps the original spiral nebula, the large galaxy with whirlpool-like spiral structure seen nearly face-on is also cataloged as NGC 5194. Its spiral arms and dust lanes sweep in front of its smaller companion galaxy, NGC 5195. Some 31 million light-years distant, within the boundaries of the well-trained constellation Canes Venatici, M51 looks faint and fuzzy to the eye in direct telescopic views. But this remarkably deep image shows off stunning details of the galaxy pair's striking colors and fainter tidal streams. The image includes extensive narrowband data to highlight a vast reddish cloud of ionized hydrogen gas recently discovered in the M51 system and known to some as the H-alpha cliffs. Foreground dust clouds in the Milky Way and distant background galaxies are captured in the wide-field view. A continuing collaboration of astro-imagers using telescopes on planet Earth assembled over 3 weeks of exposure time to create this evolving portrait of M51.
Image Credit & Copyright: The Deep Sky Collective - Tim Schaeffer, Carl Björk, Steeve Body, Fabian Neyer, Aki Jain, Ryan Wierckx, Paul Kent, Brian Valente, Antoine & Dalia Grelin, Nicolas Puig, Stephen Guberski, Mike Hamende, Julian Shapiro, John Dziuba, Mikhail Vasilev, Bogdan Borz, Adrien Keijzer
A vos télescopes ! Le 21 août au matin (vers 5 h 20), la Lune occulte Saturne. Un événement assez rare et spectaculaire. Nos conseils détaillés pour ne rien en manquer (abonnés) : https://t.co/BS6J30MKLV
Qu'est-ce que la "Super Lune bleue", ce phénomène qui a pu être observé cette nuit ? Les explications d'@olasvergnas#GrandMatin
https://t.co/UpsufYUpvn
Those staying up to catch the Perseid meteor shower last night were treated to a 2 for 1 deal.
Meteor shower AND Northern lights.
Seen as far south as Norfolk...
#aurora#northernlights
Stunning shot! Gorgeous magenta #aurora pillars peeking above the clouds over Maysville, Missouri, USA during this ongoing #solarstorm. Thanks for reporting!
(RÉ)ÉCOUTE
Comment protéger le ciel étoilé ?
@MatteoCaranta a reçu @olasvergnas, @RomainSordello et Esther Chevreau Damour.
A retrouver dès maintenant ici : https://t.co/PVBxTxVUeV
C'est parti pour les Nuits des étoiles #NDE2024 🤩
Plus de 500 événements vous attendent dans toute la France. En région toulousaine, c'est notamment @PlanetSciOccit qui vous donne rendez-vous : https://t.co/NBlyGrEv5q
@afastronomie@CNRS
Les Nuits des Étoiles ont lieu ce week-end du 9 au 11 août. Ne manquez pas les animations astronomiques près de chez vous. #NDE2024 https://t.co/cXaaehkIRM
Pour ma part, je serai au Festival des Étoiles en Ardèche, à l'observatoire Hubert Reeves : https://t.co/6DelsuxGT0