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#poussiere

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Claude Trudel<p>Des astronomes observent une planète naissante en train de sculpter la poussière qui l'entoure<br>🔸 C'est la première fois que des astronomes détectent une planète potentielle à l'intérieur d'un disque en spirale.<br><a href="https://www.eso.org/public/france/news/eso2513/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">eso.org/public/france/news/eso</span><span class="invisible">2513/</span></a><br><a href="https://jasette.facil.services/tags/astronomie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomie</span></a> <a href="https://jasette.facil.services/tags/astrophysique" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrophysique</span></a> <a href="https://jasette.facil.services/tags/%C3%A9toile" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>étoile</span></a> <a href="https://jasette.facil.services/tags/plan%C3%A8te" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>planète</span></a> <a href="https://jasette.facil.services/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a> <a href="https://jasette.facil.services/tags/espace" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>espace</span></a> <a href="https://jasette.facil.services/tags/gaz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>gaz</span></a> <a href="https://jasette.facil.services/tags/poussi%C3%A8re" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>poussière</span></a> <a href="https://jasette.facil.services/tags/t%C3%A9lescope" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>télescope</span></a> <a href="https://jasette.facil.services/tags/VLT" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>VLT</span></a> <a href="https://jasette.facil.services/tags/ESO" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ESO</span></a></p>
Antoine M.Photos prises durant un compagnonnage au sein de collectifs en autogestion. <br> Automne 2022, en Aveyron et en Corrèze<br> (Autumn 2022, Aveyron and Corrèze, France)<br> <br> <br> <br> <a href="https://pixelfed.social/discover/tags/photography?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#photography</a> <a href="https://pixelfed.social/discover/tags/photo?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#photo</a> <a href="https://pixelfed.social/discover/tags/artphoto?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#artphoto</a> <a href="https://pixelfed.social/discover/tags/artphotography?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#artphotography</a> <a href="https://pixelfed.social/discover/tags/photographie?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#photographie</a> <a href="https://pixelfed.social/discover/tags/light?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#light</a> <a href="https://pixelfed.social/discover/tags/lumiere?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#lumiere</a> <a href="https://pixelfed.social/discover/tags/magichour?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#magichour</a> <a href="https://pixelfed.social/discover/tags/exterieur?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#exterieur</a> <a href="https://pixelfed.social/discover/tags/outside?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#outside</a> <a href="https://pixelfed.social/discover/tags/working?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#working</a> <a href="https://pixelfed.social/discover/tags/chantier?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#chantier</a> <a href="https://pixelfed.social/discover/tags/construction?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#construction</a> <a href="https://pixelfed.social/discover/tags/wood?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#wood</a> <a href="https://pixelfed.social/discover/tags/bois?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#bois</a> <a href="https://pixelfed.social/discover/tags/scie?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#scie</a> <a href="https://pixelfed.social/discover/tags/sciecirculaire?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#sciecirculaire</a> <a href="https://pixelfed.social/discover/tags/saw?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#saw</a> <a href="https://pixelfed.social/discover/tags/circularsaw?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#circularsaw</a> <a href="https://pixelfed.social/discover/tags/menuiserie?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#menuiserie</a> <a href="https://pixelfed.social/discover/tags/carpentry?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#carpentry</a> <a href="https://pixelfed.social/discover/tags/dust?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#dust</a> <a href="https://pixelfed.social/discover/tags/poussière?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#poussière</a> <a href="https://pixelfed.social/discover/tags/sciure?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#sciure</a> <a href="https://pixelfed.social/discover/tags/sawdust?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#sawdust</a>
Claude Trudel<p>PDS 456 : le trou noir supermassif qui produit un vent par paquets<br><a href="https://www.ca-se-passe-la-haut.fr/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">ca-se-passe-la-haut.fr/</span><span class="invisible"></span></a><br><a href="https://jasette.facil.services/tags/gaz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>gaz</span></a> <a href="https://jasette.facil.services/tags/vitesse" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>vitesse</span></a> <a href="https://jasette.facil.services/tags/trounoir" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>trounoir</span></a> <a href="https://jasette.facil.services/tags/galaxie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>galaxie</span></a> <a href="https://jasette.facil.services/tags/poussi%C3%A8re" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>poussière</span></a> <a href="https://jasette.facil.services/tags/astronomie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomie</span></a> <a href="https://jasette.facil.services/tags/AGN" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AGN</span></a> <a href="https://jasette.facil.services/tags/astrophysique" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrophysique</span></a> <a href="https://jasette.facil.services/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a> <a href="https://jasette.facil.services/tags/%C3%A9nergie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>énergie</span></a> <a href="https://jasette.facil.services/tags/quasar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>quasar</span></a></p>
IRAP<p>[<a href="https://astrodon.social/tags/Dust" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Dust</span></a> devils on <a href="https://astrodon.social/tags/Mars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Mars</span></a>] They come in different sizes, occur frequently, ... and sometimes even merge, annihilate each other! For over four years, the <a href="https://astrodon.social/tags/camera" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>camera</span></a> and <a href="https://astrodon.social/tags/microphone" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>microphone</span></a> installed on the <a href="https://astrodon.social/tags/Perseverance" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Perseverance</span></a> rover have been observing their formation, movement ... and disappearance. The result is a better understanding of Martian weather conditions.</p><p>[<a href="https://astrodon.social/tags/Tourbillons" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Tourbillons</span></a> de <a href="https://astrodon.social/tags/poussi%C3%A8re" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>poussière</span></a> sur <a href="https://astrodon.social/tags/Mars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Mars</span></a>] Ils sont de tailles différentes, se produisent fréquemment, ... et parfois même fusionnent, s'annihilent ! Depuis plus de quatre ans, la <a href="https://astrodon.social/tags/cam%C3%A9ra" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>caméra</span></a> et le <a href="https://astrodon.social/tags/microphone" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>microphone</span></a> installés sur le rover <a href="https://astrodon.social/tags/Perseverance" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Perseverance</span></a> observent leur formation, leur déplacement ... et leur disparition. S'ensuit une meilleure connaissance des conditions météorologiques martiennes.</p><p>Info+ : <a href="https://www.nasa.gov/missions/mars-2020-perseverance/perseverance-rover/perseverance-rover-witnesses-one-martian-dust-devil-eating-another/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">nasa.gov/missions/mars-2020-pe</span><span class="invisible">rseverance/perseverance-rover/perseverance-rover-witnesses-one-martian-dust-devil-eating-another/</span></a></p>
Claude Trudel<p>L'autre gros risque sur Mars : la poussière<br><a href="https://www.ca-se-passe-la-haut.fr/2025/03/lautre-gros-risque-sur-mars-la-poussiere.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">ca-se-passe-la-haut.fr/2025/03</span><span class="invisible">/lautre-gros-risque-sur-mars-la-poussiere.html</span></a><br><a href="https://jasette.facil.services/tags/Mars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Mars</span></a> <a href="https://jasette.facil.services/tags/poussi%C3%A8re" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>poussière</span></a> <a href="https://jasette.facil.services/tags/sant%C3%A9" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>santé</span></a> <a href="https://jasette.facil.services/tags/air" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>air</span></a> <a href="https://jasette.facil.services/tags/astronomie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomie</span></a> <a href="https://jasette.facil.services/tags/astrophysique" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrophysique</span></a> <a href="https://jasette.facil.services/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a> <a href="https://jasette.facil.services/tags/tech" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>tech</span></a></p>
IRAP<p>[A la surface de <a href="https://astrodon.social/tags/Mars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Mars</span></a> ...] se forment et se déplacent des <a href="https://astrodon.social/tags/tourbillons" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>tourbillons</span></a> de <a href="https://astrodon.social/tags/poussi%C3%A8re" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>poussière</span></a>. Le tourbillon figurant au premier plan de cette vidéo acquise par la NavCam embarquée sur le rover <a href="https://astrodon.social/tags/Perseverance" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Perseverance</span></a> dépasse les 300 mètres de haut. Il se déplace à la lisière du cratère Jézéro. Credit: NASA/JPL-Caltech/Simeon Schmauß</p><p><a href="https://astrodon.social/tags/Planetology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Planetology</span></a> <a href="https://astrodon.social/tags/Astrophysics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrophysics</span></a> <a href="https://astrodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a></p>
IRAP<p>[<a href="https://astrodon.social/tags/Dust" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Dust</span></a> on <a href="https://astrodon.social/tags/Mars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Mars</span></a>] Elle recouvre le <a href="https://astrodon.social/tags/sol" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sol</span></a> martien, tourbillonne dans l' <a href="https://astrodon.social/tags/atmosph%C3%A8re" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>atmosphère</span></a>, se dépose sur les <a href="https://astrodon.social/tags/rovers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rovers</span></a>, les <a href="https://astrodon.social/tags/instruments" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>instruments</span></a> et les panneaux solaires, mettant un terme définitif à certaines missions telle <a href="https://astrodon.social/tags/InSight" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>InSight</span></a>. </p><p>Afin de mieux connaître les propriétés, la dynamique de la <a href="https://astrodon.social/tags/poussi%C3%A8re" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>poussière</span></a> martienne, son impact sur le <a href="https://astrodon.social/tags/climat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>climat</span></a> passé et actuel de la planète rouge, une vingtaine de chercheurs se sont réunis la semaine dernière dans les locaux de l'IRAP. </p><p>Infos+ : <a href="https://www.irap.omp.eu/2024/09/workshop-international-sur-les-proprietes-radiatives-de-la-poussiere-martienne/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">irap.omp.eu/2024/09/workshop-i</span><span class="invisible">nternational-sur-les-proprietes-radiatives-de-la-poussiere-martienne/</span></a></p>
Rod2ik 🇪🇺 🇨🇵 🇪🇸 🇺🇦 🇨🇦 🇩🇰 🇬🇱☮🕊️<p>C'est la <a href="https://mastodon.social/tags/poussi%C3%A8re" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>poussière</span></a> qui&nbsp;est la cause de la <a href="https://mastodon.social/tags/disparition" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>disparition</span></a> des <a href="https://mastodon.social/tags/dinosaures" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>dinosaures</span></a> , et non pas un <a href="https://mastodon.social/tags/ast%C3%A9ro%C3%AFde" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astéroïde</span></a></p><p><a href="https://fr.news.yahoo.com/sport/nest-crash-dun-ast%C3%A9ro%C3%AFde-g%C3%A9ant-103253710.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">fr.news.yahoo.com/sport/nest-c</span><span class="invisible">rash-dun-ast%C3%A9ro%C3%AFde-g%C3%A9ant-103253710.html</span></a></p>
Cristina Del Biaggio<p>Mais c'est quoi ce <a href="https://mastodon.online/tags/ciel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ciel</span></a> en dessus de <a href="https://mastodon.online/tags/Grenoble" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Grenoble</span></a>? </p><p>Ces couleurs.... et cette <a href="https://mastodon.online/tags/poussi%C3%A8re" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>poussière</span></a>... car cela ne semble pas être de la pluie...</p><p>😮</p>
Public
Claude Trudel

Une structure intrigante : X7
Par Éric Simon
Un nuage de gaz et de poussière est actuellement en train de s'enrouler autour du trou noir supermassif Sgr A*. Il a été suivi durant les 20 dernières années et nous voyons clairement comment il est déformé au fil du temps par les effets de marée gravitationnelle.
ca-se-passe-la-haut.fr/2023/03
#astrophysique #trounoir #nuage #gaz #poussière #marée

www.ca-se-passe-la-haut.frUn nuage de gaz déformé par Sgr A* suivi depuis 20 ansastrophysique, astronomie, cosmologie, astroparticules.
Public
Roturier ⏚

#Ihaveadream
Allez savoir pourquoi?
Cette nuit j'ai rêvé d'un méga feu d'artifice d'une fusée #SpaceX avec #Elon Musk seul en route vers la planète B🚀 💥 .
Dans les milieux autorisés, il se disait qu'à la suite du rachat de #Twitter par #Mastodon (pour 1€ symbolique) #Elon n'aurait pas dû choisir #ChatGPT pour le pilotage automatique de la fusée qui n'avait pas su éviter un satellite de la constellation #Starlink🛰️ .
Sa sobre épitaphe disait: #Poussière d'étoile💫

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