Pr. Octet
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pr-octet.bsky.social
Pr. Octet
@pr-octet.bsky.social
18 followers 81 following 4 posts
Une pincée d'IT en général, un soupçon de cyber. And rock :-)

Compte perso
:wq!
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pr-octet.bsky.social
Les physiciens en PLS 😅
Capture d'une partie de l'article avec passage surligné
August 31, 2025 at 7:47 AM
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cnes.fr
🤩 Pour les gens qui auraient manqué ça,
@thom-astro.bsky.social
a sorti des pépites de ses cartes SD qu'on n'avait jamais vues pour raconter une sortie extra-véhiculaire.

Y'a faire des travaux et FAIRE DES TRAVAUX, DANS L'ESPACE, EN SCAPHANDRE, PENDANT 7H30.

Valérie Damidot, on t'attend.
thom-astro.bsky.social Thomas Pesquet @thom-astro.bsky.social · Aug 22
📸 La découverte de photos jamais postées (!) sur le sujet m'ont donné l'idée de les enchaîner chronologiquement pour décrire une sortie extravéhiculaire entière. Retour en juin 2021 pendant#Alpha :

Photo 1️⃣ Juste pour donner l'ambiance...

#AlphaArchives #Crew2 #Astronaute ©ESA/NASA-Thomas Pesquet
Selfie pris durant une de mes sorties extra véhiculaire, durant la mission Alpha. La Terre brille en haut de l’image derrière moi et le casque sphérique en reflète un autre morceau. J’arbore le drapeau français sur la manche de ma combi et derrière moi le noir de l’espace contraste avec la Terre lumineuse.
August 23, 2025 at 6:06 AM
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citedelespace.bsky.social
🥵🌡️Ces données collectées, par le service marin du programme européen Copernicus, montre les anomalies de température en surface de la mer Méditerranée, le 22 juin 2025. Les zones les plus sombres indiquent +5° C par rapport aux normales de saison.
Cette carte montre le bassin méditerranéen. Les terres sont représentées en noir et blanc. Les données concernent uniquement les eaux. Allant du jaune au noir, en passant par des tons orangés et rouges, une échelle en bas à gauche nous montre les variations de température allant de 0 à supérieur +5°. Sur la carte, le golfe du Lion est le plus chaud ainsi que les abords du détroit de Gibraltar ainsi qu'autour des Baléares.
June 27, 2025 at 5:01 AM
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pierrearlais.bsky.social
Partant pour un check complet ?
https://web-check.xyz/
June 9, 2025 at 11:00 AM
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apod.shinyakato.dev
🔭 Terminator Moon: A Moonscape of Shadows

Image Credit & Copyright: Rich Addis

apod.nasa.gov/apod/ap25042...
A full Moon is shown but with a much more detailed surface than is usually visible. Many craters, dark lunar mare, and light lunar highlands are discernable. Please see the explanation for more detailed information.
April 22, 2025 at 8:00 AM
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apod.shinyakato.dev
🔭 Venus and the Triply Ultraviolet Sun

Image Credit: NASA/SDO & the AIA, EVE, and HMI teams; Digital Composition: Peter L. Dove

apod.nasa.gov/apod/ap25031...
An image of the Sun in three colors of ultraviolet light showing the transit circle of Venus and a deep coronal hole in dark blue. Please see the explanation for more detailed information.
March 16, 2025 at 8:00 AM
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wiki-potd-fr.bsky.social
Image du 2 mars :

M-7 Kenison (ascending), Mount Washington Cog Railway, New Hampshire.

#wikimedia #cpod #fr
M-7 Kenison (ascending), Mount Washington Cog Railway, New Hampshire.
March 2, 2025 at 6:00 AM
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apod.shinyakato.dev
🔭 Saturn in Infrared from Cassini

Image Credit: NASA, JPL-Caltech, SSI; Processing: Maksim Kakitsev

apod.nasa.gov/apod/ap25022...
The planet Saturn is seen very close up. The clouds are tinted beige and tan, while parts of rings are seen at the top and bottom of the image. At the north pole of Saturn at the top, a blue-tinted hexagon is visible. Please see the explanation for more detailed information.
February 23, 2025 at 8:00 AM
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apod.shinyakato.dev
🔭 Auroral Hummingbird over Norway

Image Credit & Copyright: Mickael Coulon

apod.nasa.gov/apod/ap25021...
A snowy landscape sits below a star filled sky. Dominating the frame is a large aurora in red, green, yellow, purple, white. Please see the explanation for more detailed information.
February 10, 2025 at 8:00 AM
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apod.shinyakato.dev
🔭 LEDA 1313424: The Bullseye Galaxy

Image Credit: NASA, ESA, Imad Pasha (Yale), Pieter van Dokkum (Yale)

apod.nasa.gov/apod/ap25020...
The giant galaxy cataloged as LEDA 1313424 is about two and a half times the size of our own Milky Way. Its remarkable appearance in this recently released Hubble Space Telescope image strongly suggests its nickname "The Bullseye Galaxy". Known as a collisional ring galaxy it has nine rings confirmed by telescopic observations, rippling from its center like waves from a pebble dropped into a pond. Of course, the pebble dropped into the Bullseye galaxy was a galaxy itself. Telescopic observations identify the blue dwarf galaxy at center-left as the likely collider, passing through the giant galaxy's center and forming concentric rings in the wake of their gravitational interaction. The Bullseye Galaxy lies some 567 million light-years away toward the constellation Pisces. At that distance, this stunning Hubble image would span about 530,000 light-years.
February 7, 2025 at 8:00 AM
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apod.shinyakato.dev
🔭 Hydrogen Clouds of M33

Image Credit & Copyright: Pea Mauro

apod.nasa.gov/apod/ap25013...
Gorgeous spiral galaxy Messier 33 seems to have more than its fair share of glowing hydrogen gas. A prominent member of the local group of galaxies, M33 is also known as the Triangulum Galaxy and lies a mere 3 million light-years away. The galaxy's central 60,000 light-years or so are shown in this sharp galaxy portrait. The portrait features M33's reddish ionized hydrogen clouds or HII regions. Sprawling along loose spiral arms that wind toward the core, M33's giant HII regions are some of the largest known stellar nurseries, sites of the formation of short-lived but very massive stars. Intense ultraviolet radiation from the luminous, massive stars ionizes the surrounding hydrogen gas and ultimately produces the characteristic red glow. In this image, broadband data were combined with narrowband data recorded through a filter that transmits the light of the strongest visible hydrogen and oxygen emission lines.
January 30, 2025 at 8:00 AM
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apod.shinyakato.dev
🔭 Nacreous Clouds over Sweden

Image Credit & Copyright: Vojan Höfer

apod.nasa.gov/apod/ap25020...
Vivid and lustrous, wafting iridescent waves of color wash across this skyscape from northern Sweden. Known as nacreous clouds or mother-of-pearl clouds, they are rare. But their unforgettable appearance was captured in this snapshot on January 12 with the Sun just below the local horizon. A type of polar stratospheric cloud, they form when unusually cold temperatures in the usually cloudless lower stratosphere form ice crystals. Still sunlit at altitudes of around 15 to 25 kilometers, the clouds diffract the sunlight even when the Sun itself is hidden from direct view.
February 1, 2025 at 8:00 AM
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apod.shinyakato.dev
🔭 Comet G3 ATLAS over Uruguay

Image Credit & Copyright: Mauricio Salazar

apod.nasa.gov/apod/ap25012...
A foreground grass field is shown below a distant field of stars. On the grass field are some trees. Dwarfing the trees, in the sky, is a comet with a long tail. Please see the explanation for more detailed information.
January 28, 2025 at 8:00 AM
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ericlagadec.bsky.social
C'est beau une comète, et cette photo prise en 2001 particulièrement !
theplanetaryguy.bsky.social Paul Byrne @theplanetaryguy.bsky.social · Jan 30
Do yourself a favour and open up this photo.

Indulge in the absurd beauty of comets.

This is Comet C/2021 A1 Leonard, photographed by Michael Jäger in 2021. The tail, millions of km long, shows a region of greater density from when part of the comet nucleus disintegrated about 10 days before.
January 31, 2025 at 8:49 AM
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apod.shinyakato.dev
🔭 The Variable Nebula NGC 2261

Image Credit & Copyright: Tommy Lease (Denver Astronomical Society)

apod.nasa.gov/apod/ap25013...
The interstellar cloud of dust and gas captured in this sharp telescopic snapshot is seen to change its appearance noticeably over periods as short as a few weeks. Discovered over 200 years ago and cataloged as NGC 2261, bright star R Monocerotis lies at the tip of the fan-shaped nebula. About one light-year across and 2500 light-years away, NGC 2261 was studied early last century by astronomer Edwin Hubble and the mysterious cosmic cloud is now more famous as Hubble's Variable Nebula. So what makes Hubble's nebula vary? NGC 2261 is composed of a dusty reflection nebula fanning out from the star R Monocerotis. The leading variability explanation holds that dense knots of obscuring dust pass close to R Mon and cast moving shadows across the dust clouds in the rest of Hubble's Variable Nebula.
January 31, 2025 at 8:00 AM
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rfi.fr
Kompromat: «Playing/Praying», le nouvel album électro-punk de Vitalic et Rebeka Warrior
Kompromat: «Playing/Praying», le nouvel album électro-punk de Vitalic et Rebeka Warrior
Cinq ans après son premier album, le duo formé par Vitalic et Rebeka Warrior revient avec Playing/Praying, prêt à retourner les salles de concert et les festivals. Une musique electro sombre et brutale, adoucie par le chant et les thèmes de l’amour ou de…
rfi.my
January 27, 2025 at 9:49 AM
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ericlagadec.bsky.social
Le saviez-vous? Il existe des planètes "solitaires", qui ne tournent pas autour d'une étoile. Des études indiquent que plusieurs milliards de telles planètes erreraient dans notre galaxie! Elles auraient été éjectées de leurs systèmes (Vue d'Artiste, ©NASA, JPL-Caltech)
January 27, 2025 at 7:44 AM
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apod.shinyakato.dev
🔭 Pleiades over Half Dome

Image Credit & Copyright: Dheera Venkatraman

apod.nasa.gov/apod/ap25012...
A cluster of bright blue stars is seen on the upper right while an unusual dome-like mountain occupies most of the frame. Please see the explanation for more detailed information.
January 27, 2025 at 8:00 AM
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apod.shinyakato.dev
🔭 Stardust in the Perseus Molecular Cloud

Image Credit & Copyright: Jeff Schilling

apod.nasa.gov/apod/ap25012...
Clouds of stardust drift through this deep skyscape, across the Perseus molecular cloud some 850 light-years away. Dusty nebulae reflecting light from embedded young stars stand out in the nearly 4 degree wide field of view. With a characteristic bluish color reflection nebula NGC 1333 is prominent near center. Hints of contrasting red emission from Herbig-Haro objects, the jets and shocked glowing gas emanating from recently formed stars, are scattered across the dusty expanse. While many stars are forming in the molecular cloud, most are obscured at visible wavelengths by the pervasive dust. The chaotic environment surrounding NGC 1333 may be similar to one in which our own Sun formed over 4.5 billion years ago. At the estimated distance of the Perseus molecular cloud, this cosmic scene would span about 80 light-years.
January 25, 2025 at 8:00 AM
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apod.shinyakato.dev
🔭 Peculiar Galaxies of Arp 273

Image Credit & Copyright: Dave Doctor

apod.nasa.gov/apod/ap25010...
The colorful, spiky stars are in the foreground of this image taken with a small telescope on planet Earth. They lie well within our own Milky Way Galaxy. But the two eye-catching galaxies in the frame lie far beyond the Milky Way, at a distance of over 300 million light-years. The galaxies' twisted and distorted appearance is due to mutual gravitational tides as the pair engage in close encounters. Cataloged as Arp 273 (also as UGC 1810), these galaxies do look peculiar, but interacting galaxies are now understood to be common in the universe. Closer to home, the large spiral Andromeda Galaxy is known to be some 2 million light-years away and inexorably approaching the Milky Way. In fact the far away peculiar galaxies of Arp 273 may offer an analog of the far future encounter of Andromeda and Milky Way. Repeated galaxy encounters on a cosmic timescale ultimately result in a merger into a single galaxy of stars. From our perspective, the bright cores of the Arp 273 galaxies are separated by only a little over 100,000 light-years.
January 9, 2025 at 8:00 AM
pr-octet.bsky.social
Une sonde de la Nasa est passée au plus près du Soleil www.francetvinfo.fr/sciences/esp...
Une sonde de la Nasa est passée au plus près du Soleil
Lancée en août 2018, la sonde Parker doit approfondir les connaissances scientifiques sur notre étoile afin notamment de percer le secret des tempêtes solaires.
https://www.francetvinfo.fr/sciences/espace/une-sonde-de-la-nasa-va-passer-au-plus-pres-du-soleil-mardi_6974216.html#xtor=CS2-765-[autres]-
December 26, 2024 at 3:50 PM
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marielange.bsky.social
Hub France IA a sorti un livre blanc sur les risques dans les cas d'usages GenAI.
Très accessible, vous y trouverez des définitions, une démarche d'analyse des risques, et des exemples de risques associés à différents cas d'usages.
Je vous encourage à le découvrir !
www.hub-franceia.fr
December 13, 2024 at 8:39 AM
pr-octet.bsky.social
Le calendrier de l'avent #cyber
www.csirt-bfc.fr/calendrier-a...
CSIRT-BFC - Calendrier de l'avent cybersécurité 2024
www.csirt-bfc.fr
December 2, 2024 at 6:19 AM
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blipbloup.bsky.social
Un calendrier de l'avent avec des énigmes et surprises mathématiques ! jeux.lesmathsenscene.fr/avent-2024/

(Je n'ai pu voir que la première, mais je suppose que c'est adapté aux enfants dans les 8-14 ans.)
jeux.lesmathsenscene.fr
December 1, 2024 at 8:24 PM
pr-octet.bsky.social
Drôle, non? #science
November 28, 2024 at 6:13 PM