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Aeronomix (Guillaume G)

@aeronomix.bsky.social
815 followers 709 following 797 posts

Astrophysicist, Aeronomer, lidars Comets are like 🐈: they have tails and they do what they want!

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Reposted by Aeronomix (Guillaume G)
David Ho @davidho.bsky.social · 02/10/2026
Oh retractionwatch.com/2026/10/02/p...
David Ho, a climate scientist at the University of Hawaii, responded to our request for comment on the paper by saying he was not interested in reading it. “I’m sorry, but I’d rather keep my brain cells,” he said.
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European Space Agency @esa.int · 30/09/2026
Our Smile mission is ready for science. Its ultraviolet camera has already captured this substorm rippling through the northern lights around Earth’s North Pole. @science.esa.int 🧪🔭
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ESA Space Science @science.esa.int · 28/09/2026
A successful Earth flyby improves Juice’s course to Jupiter Earlier today, Juice flew just 8640 km above the Indian Ocean and snapped these images with its onboard monitoring cameras. 1️⃣Africa, by Juice monitoring camera 2️⃣Madagascar, by Juice NavCam 3️⃣Moon, by Juice NavCam 🔭 🧪 #planetsci
Mostly black space, most of Earth visible at the top right of the image. Part of a spacecraft visible on the left.Part of the island of Madagascar in black and white.A crescent Moon, with about a quarter of the Moon showing. Many craters are visible.
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 24/09/2026
The idea is to sound the sirens. I don't think anyone wants a warning system based on the wisdom of the public (note that I am working on different types of alert systems... but it still involves noaa)
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 24/09/2026
Yep, that's how the network for tsunami sirens works tsunami.org/the-warning-... www.tsunami.noaa.gov/pmel-theme/t...
tsunami.noaa.gov
Tsunami Detection | NOAA Tsunami
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 22/09/2026
This event has been really hidden in the flow of news. It is only because I heard about it again that I knew where to look for it: the fact that a lot of lives were spared because it happened extremely early makes it an un newsworthy subject. It should have been a major alarm
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 22/09/2026
Like the Tracy Arm Fjord megatsunami that happened last year 😅 (without any human death by pure luck) alaskabeacon.com/2026/05/07/m...
alaskabeacon.com
Megatsunami in Alaska’s Tracy Arm was the second-highest ever measured | Alaska Beacon
The landslide-generated tsunami reached a height of 1,580 feet, second only to the deadly 1958 earthquake-triggered Lituya Bay event.
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Reposted by Aeronomix (Guillaume G)
Dave Kellett @davekellett.bsky.social · 20/09/2026
COMIC: Centimeters
PANEL 1: GRAMP, an older bald man with a grey mustache, holds a measuring tape against a piece of plywood. ARTHUR, a yellow duck, watches.
GRAMP: We need to cut four feet seven sixteenths by three feet five eighths.
ARTHUR: Your tape measure ha CENTIMETERS on it…why don’t we just use that?

PANEL 2: GRAMP, with safety glasses and wielding a table saw, looks out, realizing.
GRAMP: Oh my gosh. This is so much easier.

PANEL 3: GRAMP measuring another piece of wood, stares with wide eyes.
GRAMP: This is so much easier.

PANEL 4: GRAMP lies in bed in the evening, moonlight reflecting on the wall. ARTHUR stands next to the bed, looking at him.
GRAMP: That was so much easier.
ARTHUR: You have tasted from a cup. which you will never drink.

——
Want 5,000 more comics like this? Join us at Patreon.com/sheldoncomics for the *FULL* Sheldon archives, art giveaways, fun community, and more! Sheldon Comics copyright Dave Kellett. Colors by Beth Reidmiller
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 15/09/2026
static.klipy.com
Collecting Weird Space Crap Is Part Of The Fun Of Starfleet Star Trek Lower Decks
Alt: Collecting Weird Space Crap Is Part Of The Fun Of Starfleet Star Trek Lower Decks
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 15/09/2026
😨
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 14/09/2026
Ce sont des promesses en unités impériales, le cerveau Européen ne peut pas comprendre
static.klipy.com
America Eagle Mascot Cheers at World Cup
ALT: America Eagle Mascot Cheers at World Cup
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 08/09/2026
(except if somehow you decide to pay me for review, lol)
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 08/09/2026
Don't fill my inbox with invitation to review a paper and reminder of the invitation during a weekend. This is an automatic refusal to review on my end
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Dr. Damien P. Williams, dread portent down from a mountain cave @wolven.blacksky.app · 07/09/2026
Natural predator reintroduction plus dedicated wildlife over- or underpass roads really will sort a Lot of this shit out
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European Space History @eurospacehistory.bsky.social · 07/09/2026
#OTD: 7 September 2014, @esa.int’s Rosetta mission lander ‘Philae’ snapped a ‘selfie’ at Comet 67P/Churyumov–Gerasimenko from about 50 km. www.esa.int/ESA_Multimed... @science.esa.int @dlr-de.bsky.social @cnes.fr @dlr-spaceagency.bsky.social
Black and white image showing the side of the Rosetta spacecraft and one of its 14 m solar wings, with the comet in the background.
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 05/09/2026
C'est un super lien, merci. J'aurai voté pour un Gringorten ou un Dimaxion (ça aurait vraiment secoué quelque croyances). Danseji IV est pas mal aussi (c'est bien pour montrer les principaux couloirs aeriens)
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 04/09/2026
Dommage que ça ne se soit pas reflété dans le contrat. Collins aurait put offrir un premier type de combinaison au lieu de jeter l'éponge directement
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 04/09/2026
Le mode traditionnel de financement des projets de la Nasa est assez peu compatible avec le développement itératif. (En science, on retourne en compétition à chaque étape, en double blind, et si tu n'est pas pris c'est la disette). Je pense que les objectifs maximalistes reflètent cette culture
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 04/09/2026
xkcd.com/977/ 😉
xkcd.com
Map Projections
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European Space Agency @esa.int · 03/09/2026
Mercury Transfer Module separation confirmed! 📡 ✅ Signal acquired via our Cebreros deep-space antenna confirms the spacecraft is healthy and operating as expected. The MPO and Mio spacecrafts are now on their way to Mercury orbit insertion on 21 November. Farewell, MTM. Mercury awaits. ☀️🛰️
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 02/09/2026
C'est sur que c'est plus efficace que le diplôme pdf envoyé en Août disant "Félicitations: vous avez reviewé 5 papiers l'an dernier" (Mais j'ai envoyé toutes mes reviews après la deadline...)
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 01/09/2026
At first, it looks like the hardest thing is research is finishing the research. Then, you realize that it is getting the funding for doing your research. After that, the hardest thing is to juggle 4-5 very different projects while not trying to do the research you are writing a proposal for
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 27/08/2026
Est-ce que les machinpathes ont assez de thune pour financer Mars Sample Return? Ils pourront dire que ça embellifie les bidules... L'important, c'est qu'un vrai laboratoire fait les analyses
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Rêves d'espace @revesdespace.eurosky.social · 23/08/2026
🌑 Toutes les images de la mission #Artemis II sont désormais disponibles en format raw : eol.jsc.nasa.gov/Col... À vos traitements ou téléchargements ! 📷 Traitements par Asher B.
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 21/08/2026
🤣
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ESO @eso.org · 20/08/2026
Over the past days, unusually severe weather has affected northern Chile, where our observatories are located. This brought snow to Paranal and to the ELT construction site. It left stunning images, while causing severe flooding and damage to several cities within the Antofagasta Region. 🔭 1/2
Snow-covered view of ESO’s Extremely Large Telescope construction site at Cerro Armazones. The telescope dome and cranes rising through low clouds as the Sun shines brightly near the horizon.Aerial view of a vast snow-covered mountainous landscape in Chile’s Atacama Desert, with ESO facilities and access roads visible in the foreground beneath a clear blue sky.Wide view of ESO’s Paranal Observatory after snowfall, with the Very Large Telescope’s four Unit Telescopes visible atop the snow-covered Cerro Paranal under a blue-grey sky.Snow-covered landscape at ESO’s Paranal Observatory, with the Residencia building stretching along the right and the Very Large Telescope’s Unit Telescopes visible atop Cerro Paranal in the distance under a clear blue sky.
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 20/08/2026
On remarquera que c'est un tire bouchon pour droitiers
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 19/08/2026
😪
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 19/08/2026
on a tous les films des années 90-00 pour le prouver : Armaggedon, Deep Impact, The Core, Sunshine Par contre la réalité, c'est pas vraiment comme dans les films
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 19/08/2026
One of the little things I like: the solar corona we see is due to Thomson scattering by the electrons (this is why it looks white)! We are "looking" at the electrons!
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 19/08/2026
Finally here: my video of the totality from Spain! You can enjoy Baily's beads, the beautiful prominence, the solar corona (I changed the exposition a little during the video) youtu.be/Xdaeg-z_OrE?...
youtu.be
Eclipse in Zaragoza. 2026 August 12
YouTube video by Guillaume Gronoff
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 19/08/2026
Chez nous les Américains, on a la solution youtu.be/V6CLumsir34?...
youtu.be
The Exploding Whale: An infamous moment in Oregon history creates a strangely beloved icon
YouTube video by KATU News
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Astropierre @astropierre.com · 15/08/2026
Une équipe de scientifiques italiens s'est fait voler beaucoup de matériel en France, alors qu'ils revenaient de l'observation de l'éclipse du 12 août en Espagne. Si vous avez des infos, si les clubs d'astronomie du coin se voient proposer du matériel "tombé du camion", prévenez les autorités 🙏
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CosmicRami 🏳️‍🌈🏳️‍⚧️ @rami.spaceaustralia.com · 15/08/2026
Moon shadow!
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ESA Technology @technology.esa.int · 14/08/2026
A double eclipse? 🤔 Yes, you heard right. Our Proba-3 mission normally doesn’t need the Moon’s help when creating an artificial solar eclipse. But this time, the Moon didn’t want to be left out 🌚 www.esa.int/ESA_Multimed... #EuropeanSolarEclipse
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CosmicRami 🏳️‍🌈🏳️‍⚧️ @rami.spaceaustralia.com · 13/08/2026
This is cool. It looks like two evil forces are converging on the EU. Spain looks like it was def. the best location this time around!
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Melaine Le Roy @subfossilguy.bsky.social · 11/08/2026
Rhône Glacier July 4, 2025 | July 13, 2026 Only one year! 😲 The collapse of the south-oriented tongue of this giant is mind-blowing! 🧊🔥 📷 Tobias Büttel
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Vivien "𝕯𝖊𝖗 𝕾𝖎𝖊𝖇𝖙𝖊 𝕾𝖈𝖍𝖆𝖙𝖙𝖊𝖓" ⚓🚀 @der-siebte-schatten.space · 08/08/2026
Pour ceux prévoyant de se rendre en Espagne assister à l'éclipse solaire totale, l'agence météorologique espagnol a publié une carte des couvertures nuageuses probables le 12 août. En blanc, c'est OK En bleu, des possibles nuages en soirée En rouge, probables nuages bas avec fortes incertitudes
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ESA Space Science @science.esa.int · 08/08/2026
⚠️ Safety first ⚠️ If you're getting ready to observe the total solar eclipse on 12 August, please follow safety rules: 🚨 use only certified eclipse glasses (ISO 12312-2)  🚨 do not look through devices without a special solar filter Check out the safety list below! 🔭🧪#EuropeanSolarEclipse
A screenshot from our edu kit presenting safety rules for observing the total solar eclipse. You can access the list at pages 7 and 8 from the kit. Download PDF at https://cesar.esa.int/download.php?Id=4144&N=77047198
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public health guy @publichealthguy1.bsky.social · 06/08/2026
have we considered just banning these things entirely
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Aurélien Genin @astroaure.eurosky.social · 06/08/2026
🚀 L'Institut d'Astrophysique d'Andalousie 🇪🇸 a réussi à observer l'impact du second étage de Falcon 9 sur la Lune hier matin 🤩 On ne voit pas le flash de l'impact en lui-même (qui a eu lieu juste derrière le limbe lunaire), mais le nuage de débris éjecté dans l'espace 🤯
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Mike Brown @plutokiller.com · 07/08/2026
My updated class THE SCIENCE OF THE SOLAR SYSTEM is now LIVE and COMPLETELY FREE at www.coursera.com/learn/solar-system 27 hours of lectures, full quizzes, full exam. And free. You can’t even pay if you want to. Or you can just find the lectures on YouTube any time.
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Observatoire de Paris - PSL @obs-paris-psl.bsky.social · 06/08/2026
Histoire d'éclipse... #eclipse2026 @psl-univ.bsky.social
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Aurélien Genin @astroaure.eurosky.social · 06/08/2026
🚀 L'orbiteur lunaire KPLO 🇰🇷 a trouvé où s'est écrasé l'étage supérieur de Falcon 9 hier matin sur la Lune ! De prochaines observations, notamment avec LRO 🇺🇸, devraient permettre de mesurer la taille du cratère créé
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Jonathan McDowell @planet4589.bsky.social · 05/08/2026
The VLT saw the plume!
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Theo @darkellysio.bsky.social · 02/08/2026
Comme chaque été, on lit tout et n'importe quoi sur la flotte de bombardiers d'eau française et ses alternatives
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Don Davis @ddavisspaceart.bsky.social · 03/08/2026
51 years ago I painted a trio of Viking related works for NASA HQ including the widely reproduced one of the landing on Mars. I have reimagined the Landing portrayal in updated form using digital methods of visualization and painting. I chose the same angle but with reality replacing anticipation.
This oil painting portrays the Viking 1 landing on Mars, which appeared in countless publications. The story of this work is relayed in an earlier post and is shown here for comparison with the new portrayal of this very view, showing the event as it would have appeared. 
This 1975 anticipatory painting was done with oils on a gesso smoothed 16 X 20 canvas panel, using traditional art methods including a tracing paper guide featured earlier. 
 This work shows in retrospect my ideal of the 'spirit of space art', showing something of a summary of what is known of the subject while conveying what it is about the subject's known or theorized attributes that I find visually compelling. The new digital painting updates that visual impression with one based on our current knowledge. The new digital work was also done at the same size as this one was for possible printing purposes, 16 by 20 inches at 300 DPI.
 #Sciart   In 1976 the pair of Viking spacecraft orbiter/lander combos were sent to Mars. Before Viking, Mars was still largely a place of our imaginations, an unknown that we wrote stories about then studied from Earth and space. The dominance of cratered terrain on the portions of Mars photographed by Mariners 4, 6 and 7 gave an initially Lunar impression of that world, which changed during the development of the Viking lander after Mariner 9 revealed the planet.
 The first landing was aimed for a flat flood plain, judged as a decent place to search for life. The landing date was July 4, however the intended site appeared too rough for comfort in the high quality orbiter photos, causing the landing to wisely be delayed. A smoother site further 'down stream' was found using photo and radar data.
The landing proceeded quite nominally, a magnificent achievement that apparently accounted for what it had to and made it the first time.

The first photo from the surface was a look at a footpad to see how solid the 'footing' appeared. Then a moderate resolution panorama of the surroundings was obtained, first showing the rocks, hills, dunes-and bright sky. The latter was my biggest surprise as a space artist. 

The adjustments to the color balance of the later photos were gradually narrowed down. The ubiquitous dust is planet wide, suspended in the air and coloring the sky a luminous tan ochre. 

This digital painting shows the view a meter above the surface seeing the lander briefly kicking up dust less than a second before touchdown with the footpads 1.4 meters high. The landing rockets were designed with many nozzles to disturb the surroundings as little as possible. The nearby disturbed dust resembles in color that of the sky. We are 6 meters away from the center of the lander. field of view is 60 degrees, we are looking Northwest with the Sun and Earth off the frame to the left.

This is a digital art update of the pre mission oil painting I did for NASA HQ 1n 1975.

  #Sciart
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 01/08/2026
Obviously, we should make bread based re-entry shields! youtube.com/shorts/V_cc1...
youtube.com
Bread is weirdly invincible to fire
YouTube video by MrGreenGuy
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 01/08/2026
Entre le hardware pour la station orbitale lunaire modifié pour aller vers Mars et ce modèle qui doit se transformer en rover lunaire, j'ai l'impression d'être dans une partie de Kerbal Space Programme depuis quelques mois... (et les points science sont de plus en plus bas)
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CosmicRami 🏳️‍🌈🏳️‍⚧️ @rami.spaceaustralia.com · 30/07/2026
Everyone in LA should go to this, take a small hand held mirror, stand about 50m away from the event and use the mirror to reflect sunlight into the crowd from all angles.
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