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Aeronomix (Guillaume G)

@aeronomix.bsky.social
814 followers 705 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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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
😨
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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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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 · 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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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 · 19/08/2026
😪
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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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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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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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ESA Space Science @science.esa.int · 29/07/2026
Emoji x space 🌌 When it comes to space science, we find our way around emoji with a stretch of imagination – but wouldn't it be cool to have some more science-y ones? What space emoji would you like to have? 🔭
Infographic showing the emoji we have for black hole and spiral galaxy on the left side and the emoji we deserve on the right side. On the left side we see the literal black hole emoji and the emoji for a cyclon that looks like a blue spiral. On the right side we see a more detailed view of a black hole and its accretion disk and a spiral galaxy inspired by the Gaia Milky Way map. An ESA logo is present on the upper left corner.Infographic showing the emoji we have for a planet like Saturn and the Sun on the left side and the emoji we deserve on the right side. Here the full range of Solar System planets is visible and the Sun is more detailed with sun spots and coronal loops. An ESA logo is present on the upper left corner.Infographic showing the emoji we have for a nebula and gravitational waves on the left side and the emoji we deserve on the right side. On the left we see a nebula with stars, while on the right a more detailed view inspired by a real photo. On the left we also see the emoji for a wavy dash, while on the right we see two black holes as they spiral towards each other before merging, releasing gravitational waves – fluctuations in the fabric of spacetime. An ESA logo is present on the upper left corner.
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A. Fresnel @fresnel.bsky.social · 27/07/2026
In my imagination there exists a fantasy world where this facility gets saved because popular YouTube nerd personality @tomscott.com made a video about it recently and upsetting the sheer numbers of loud nerds who now feel personally invested cannot be risked. youtu.be/YrZyJuaBfKA?...
youtu.be
I cannot believe Jodrell Bank let me do this
YouTube video by Tom Scott
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Sarah Primate @langurlover.bsky.social · 25/07/2026
Say what now? 👀
livescience.com
'We're trying this out of frustration': Marmots star in OnlyFans account as researchers desperately look for ways to raise funds amid US budget cuts
As U.S. federal research budgets continue to be slashed, a team of marmot researchers have turned to unconventional sources of funding.
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Josef Aschbacher @josefaschbacher.esa.int · 25/07/2026
Based on current information, the Cebreros station appears to have remained unharmed. My deepest thanks go to the Spanish emergency services whose efforts helped protect the site as wildfires approached. Left: 24 July 19:57, Right: 25 July 07:54
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Vivien "𝕯𝖊𝖗 𝕾𝖎𝖊𝖇𝖙𝖊 𝕾𝖈𝖍𝖆𝖙𝖙𝖊𝖓" ⚓🚀 @der-siebte-schatten.space · 25/07/2026
La station sol de l' @esa.int avait également été menacé par ce feu qui semblait proche aussi de leur installation. Heureusement, celle-ci ne semble avoir été sauvée d'après leur communiqué. Un grand merci aux pompiers espagnols, et plus généralement partout en Europe ! www.esa.int/About_Us/Cor...
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CosmicRami 🏳️‍🌈🏳️‍⚧️ @rami.spaceaustralia.com · 24/07/2026
DSN operates on “follow the Sun” model, meaning the team of operators (Spain, US, Australia) work in their regular daylight hours and hand baton to the next team as Earth rotates. So global telescopes operated by one team at time. Suspect Madrid put in safety mode due to fire unpredictability.
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 25/07/2026
🙀
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Prof. Stefan Rahmstorf @rahmstorf.bsky.social · 24/07/2026
We decided to get out. Not sure whether we would have still made it tomorrow. The main road Lacanau-Bordeaux is already closed. #GlobalHeating #Wildfire
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 23/07/2026
My laser crystals are already so difficult to work with even when they ca briefly be exposed to ambient air. This is orders of magnitude more difficult to handle
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Brian Wolven @brianwolven.bsky.social · 23/07/2026
This is fine. 🥵🔥
bbc.co.uk
Africa's camels are dying from extreme heat as temperatures soar
Herders and experts tell the BBC how Africa's camels are suffering because of extreme heat.
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 19/07/2026
we need to do that worldwide
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Marlène Aviation @aviationmarlene.bsky.social · 17/07/2026
An animated video from the 1960s explaining how the second and third stages of the ‘Diamant A’ rocket work to enable the deployment of the A-1 satellite, or ‘Astérix’, into orbit. © Ecpad
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GalactiCamille 🏳️‍⚧️🌌🛰️🌟☄️🪐🌘 @galacticamille.com · 15/07/2026
Les livrets de règles du jeu FR & EN sont arrivés ! On les feuillette ensemble ! Toute pré-commande de #NEBULAEOriginsOfStard en + me donnera des marges de manœuvre ! Pour pré-commander (<1er sept) ➡️ fr.ulule.com/nebulae-orig... Merci à toutes et tous ! #j2s #boardgames #SciComm #Astrophysique
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 15/07/2026
Si on veut un méga projet aux US pour améliorer la production électrique, on peut commencer par mettre des panneaux solaires au dessus des parkings. Il y aura vraiment de l'électricité produite et ça ne créera pas de problèmes
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CosmicRami 🏳️‍🌈🏳️‍⚧️ @rami.spaceaustralia.com · 15/07/2026
"For orbital mirrors, the reason they are dumb as shit can be summarized like this: The Sun is really bright. Go outside nerds, touch some grass." excellent blog post from @physicsmatt.bsky.social on the really dumb idea of putting giant mirrors in space (FYI - USA FCC has approved a prototype)
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Aeronomix (Guillaume G) @aeronomix.bsky.social · 08/07/2026
😭
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China Space Watch @chinaspace.bsky.social · 06/07/2026
China’s #Tianwen2 probe has arrived at the near-Earth asteroid Kamo'oalewa and begun scientific exploration. After a 400-day journey of roughly 1 billion km through deep space. The image shows the target asteroid, taken by the probe from roughly 20 km away on approach to Kamo'oalewa on July 2.
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Aurélien Genin @astroaure.eurosky.social · 06/07/2026
🛰️ On a même un premier film du passage d'Hayabusa-2 au plus près de l'astéroïde 😲 La sonde est passée à un peu moins d'1km, avec une vitesse relative de 5,3km/s ! 📸 JAXA
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