@evansarrazin.bsky.social
⚡ Inventeur & explorateur d’idées 🇨🇦🏳️🌈 📈 Finance • ⚙️ Technologie • 🌀 Low-Tech 🌱 Écologie • 🔭 Astronomie • 📜 Histoire 🌌 Entre Terre & Ciel, matière & mystère
Image de fossiles avec comme titre "Comment reconnaître les premières traces de vie sur Terre ?"
Quelles sont les 1ères traces de vie sur Terre ?
Une synthèse graphique de Claire Marc, écrite par @cnrs-insu.bsky.social avec la précieuse aide d'Isabelle Daniel @lyongeologie.bsky.social
#vulgarisation #SVT
Thread à dérouler ci-dessous :
1/6
Des jets de matière de 8 années-lumière de long s'échappent d'une étoile en train de se former. Ceci vient d'être capturé par le télescope spatial JWST.
Des jets de matière de 8 années-lumière de long s'échappent d'une étoile en train de se former. Ceci vient d'être capturé par le télescope spatial JWST.
10.09.2025 15:07 — 👍 210 🔁 43 💬 10 📌 3Nouveau #Banksy à #Londres ➝ retiré bientôt, mais gravé dans nos mémoires.
New #Banksy in #London ➝ soon removed, but etched in memory.
#StreetArt #Art #Graffiti #BanksyArt #UrbanArt #PoliticalArt #Justice #Protest #HumanRights #UK #Culture #Activism #Freedom #History #Legacy #Truth #Voice #Mural
They keep following me at home !
09.09.2025 04:17 — 👍 4 🔁 0 💬 1 📌 0
Ppaaaallpps??? :(
09.09.2025 04:14 — 👍 3 🔁 0 💬 0 📌 0
In what appears as a celestial dreamscape, a blue and black sky filled with brilliant stars covers about two thirds of the image. The stars are different sizes and shades of white, beige, yellow, and light orange. Across the bottom third of the scene is a craggy, mountain-like vista with spire-like peaks and deep, seemingly misty valleys. These so-called mountains appear in varying shades of orange, yellow, and brown. The soaring spires are going up, up, up, where a wispy, ethereal white cloud stretches horizontally across the scene. Steam appears to rise from the mountaintops and join with this cloud. At the top, right corner of the image, a swath of orange and brown structure cuts diagonally across the sky.
A star cluster is shown inside a large nebula of many-coloured gas and dust. The material forms dark ridges and peaks of gas and dust surrounding the cluster, lit on the inner side, while layers of diffuse, translucent clouds blanket over them. Around and within the gas, a huge number of distant galaxies can be seen, some quite large, as well as a few stars nearer to us which are very large and bright.
This image of the Ring Nebula, taken by Webb’s Near-Infrared Camera, appears as a distorted doughnut. The nebula’s inner cavity hosts shades of blue and green, while the detailed ring transitions through shades of orange in the inner regions and pink in the outer region. The ring’s inner region has distinct filament elements. Stars litter the scene, with a particularly prominent star with 8 long spikes in the top right corner.
The image is divided horizontally by an undulating line between a cloudscape forming a nebula along the bottom portion and a comparatively clear upper portion. Speckled across both portions is a starfield, showing innumerable stars of many sizes. The smallest of these are small, distant, and faint points of light. The largest of these appear larger, closer, brighter, and more fully resolved with 8-point diffraction spikes. The upper portion of the image is blueish, and has wispy translucent cloud-like streaks rising from the nebula below. The orangish cloudy formation in the bottom half varies in density and ranges from translucent to opaque. The stars vary in color, the majority of which, have a blue or orange hue. The cloud-like structure of the nebula contains ridges, peaks, and valleys – an appearance very similar to a mountain range. Three long diffraction spikes from the top right edge of the image suggest the presence of a large star just out of view.
my favorite jwst images UPDATED
08.09.2025 01:59 — 👍 361 🔁 66 💬 4 📌 4With various companies like Palantir, Paragon (Graphite App), etc, doing data sourcing and infringing on people's privacy, it's a good idea to reduce spyware risks.
- Keep your OS updated
- Reboot daily
- Use encrypted apps
Remember, ICE is using Graphite.
#ProudBlue
Credit: @theronanfarrow/TT
#TeamCalcite always and forever. Here's a small taste of calcite's beauty with a look at my personal calcite collection.
04.09.2025 19:09 — 👍 164 🔁 23 💬 15 📌 4
One February night in 1958, something caused a group of skiers to cut their way out of their tent and flee into a howling blizzard, in 20-below-zero temperatures, in bare feet or socks. What was it?
04.09.2025 01:01 — 👍 156 🔁 24 💬 18 📌 2
Me securing a shark getting measured for a research workup
Posing with some friends as part of my Why Sharks Matter book tour.
Scientists of Bluesky, introduce yourselves by replying to this post and I’ll share it and help you get some followers!
I’m David, I’m based in DC and study shark ecology and conservation policy. I’m the author of “Why Sharks Matter.”
🧪🦑🌎🐠🦈
Close-up of a jumping spider on a light surface. Its furry body is brown with iridescent green and blue reflections under its large, forward-facing black eyes. It appears to be gazing directly at the camera with alert curiosity.
A wide shot of the Milky Way under a clear, dark sky. Thousands of stars create a dense blue-and-white nebular cloud sweeping diagonally across the frame. Silhouetted tree edges can be seen faintly in the corners.
Young man smiling warmly at the camera, seated at a red table in a cozy, softly lit room. He wears a white polo and leans slightly forward with a relaxed and kind expression. Background includes a rustic wall and festive ambiance.
Bonjour from Québec 🇨🇦
I’m Evan, a nature-observer and low-tech inventor exploring the intersection of ecology, astronomy, sound, and wonder.
I don’t have a PhD — just a deep curiosity and a notebook full of sketches and questions.
I believe curiosity is its own degree. 🌱📓🔭
#ScienceOfBluesky
On confond longévité et sagesse. Ce n’est pas en vivant plus longtemps qu’on devient meilleur.
04.09.2025 00:47 — 👍 1 🔁 0 💬 0 📌 0🏛️ Victoire confirmée : la cour fédérale annule les gels de fonds contre Harvard.
🗣️ Liberté académique, 1
🤬 Censure politique, 0
✊ L’AAUP, l’UAW et Harvard gagnent face aux attaques du gouvernement.
#HarvardWins #FreeSpeech #AcademicFreedom
📎 [Source : Washington Post, Reuters]
🕷️ Rencontre matinale avec Phidippus audax, une araignée sauteuse dotée d’une vision stéréoscopique à 8 yeux.
Pas de toile, elle chasse à vue.
Ce matin, elle tournait au-dessus de ma tête, entre deux snoozes.
Une micro-prédatrice en mission.
#MacroLife #PhidippusAudax #JumpingSpider
Ciel 🌌 étoilé , Voie lactée bleutée et cime des arbres.
🌌 Bluesky pour mon premier bluesky ! 💫
La Voie lactée au-dessus de Mont-Tremblant, Québec 🇨🇦
— un vrai ciel blue sky 😉✨
Vos conseils sont les bienvenus pour les temps d’expo et le traitement ! 🙏
#shotoniphone #astrophotography #bluesky #milkyway #Quebec #MontTremblant #longexposure #stargazing
