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#poussiere

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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>
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>
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>
Guillaume Petit<p>Impressionnante vue satellite révélant la présence de poussières de sable du Sahara ce mardi, qui rendent le ciel pâle dans les 2/3 ouest de la France. <br>(© Copernicus)</p><p><a href="https://piaille.fr/tags/meteo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>meteo</span></a> <a href="https://piaille.fr/tags/image" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>image</span></a> <a href="https://piaille.fr/tags/satellite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>satellite</span></a> <a href="https://piaille.fr/tags/poussiere" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>poussiere</span></a> <a href="https://piaille.fr/tags/sable" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sable</span></a> <a href="https://piaille.fr/tags/sahara" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sahara</span></a> <a href="https://piaille.fr/tags/france" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>france</span></a></p>
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