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	<title>Qu'est-ce qu'une plan&#232;te habitable ?</title>
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	<description><![CDATA[Une planète est dite "habitable" si les conditions sont réunies pour que la vie puisse s’y développer et perdurer.]]></description>
	
	
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	<title>Et s'il n'y avait plus internet ?</title>
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	<description><![CDATA[S’il arrivait une tempête solaire exceptionnelle, les connexions internet pourraient être endommagées...]]></description>
	
	
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	<title>La Terre, vaisseau spatial</title>
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	<description><![CDATA[La Terre bouge vite dans l’espace, à la suite du Soleil...]]></description>
	
	
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	<title>Un syst&#232;me plan&#233;taire autour de Proxima du Centaure</title>
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	<description><![CDATA[Une troisième planète a été découverte autour de l’étoile Proxima]]></description>
	
	
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	<title>On se bouscule autour de Mars ...</title>
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	<description><![CDATA[Plusieurs satellites tournent actuellement autour de Mars, dont Al Amal, envoyé par les émirats arabes unis ; l’équipe responsable est essentiellement composée de femmes...]]></description>
	
	
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	<title>Un trou noir cr&#233;ateur d'&#233;toiles</title>
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	<description><![CDATA[Les trous noirs ne se contentent pas d’avaler ce qui passe à portée d’eux, ils émettent aussi de puissants jets de matière. Certains peuvent conduire à la formation de nouvelles étoiles]]></description>
	
	
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	<title>Les humains du pass&#233;</title>
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	<description><![CDATA[Il y a eu dans le passé plusieurs espèces "homo" différentes de la nôtre...]]></description>
	
	
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	<title>Les deux infinis</title>
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	<pubDate>Wed, 24 Aug 2022 00:00:00 +0200</pubDate>
	
	
	<description><![CDATA[Le LHC au CERN redémarre après trois ans de repos]]></description>
	
	
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	<title>Les sondes spatiales Voyager</title>
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	<pubDate>Tue, 23 Aug 2022 00:00:00 +0200</pubDate>
	
	
	<description><![CDATA[Après 45 ans les sondes voyager, lancées en 1977, continuent à nous donner des informations sur l’espace interstellaire]]></description>
	
	
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	<title>La Terre ; la Lune et le Soleil</title>
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	<pubDate>Mon, 22 Aug 2022 00:00:00 +0200</pubDate>
	
	
	<description><![CDATA[Nous avons bien de la chance de pouvoir observer des éclipses de Lune et de Soleil]]></description>
	
	
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	<title>Exocom&#232;tes</title>
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	<pubDate>Fri, 19 Aug 2022 00:00:00 +0200</pubDate>
	
	
	<description><![CDATA[Il y a plein de comètes dans les systèmes planétaires qui tournent autour des étoiles]]></description>
	
	
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	<title>Le billiard de l'espace</title>
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	<pubDate>Thu, 18 Aug 2022 00:00:00 +0200</pubDate>
	
	
	<description><![CDATA[Le télescope spatial Hubble a découvert pas moins de cinq galaxies entrain de se rentrer dedans...]]></description>
	
	
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	<title>La recherche de la vie dans le syst&#232;me solaire</title>
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	<pubDate>Wed, 17 Aug 2022 00:00:00 +0200</pubDate>
	
	
	<description><![CDATA[Une mission spatiale est prévue dans un an pour aller voir de près les satellites de Jupiter qui pourraient abriter une certaine forme de vie.]]></description>
	
	
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	<item>
	
	<title>A propos des dinosaures</title>
	<link>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/a-propos-des-dinosaures-87083</link>
	<guid>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/a-propos-des-dinosaures-87083?id_document=56711</guid>
	<comments>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/a-propos-des-dinosaures-87083#comments</comments>
	<pubDate>Tue, 16 Aug 2022 00:00:00 +0200</pubDate>
	
	
	<description><![CDATA[Des chercheurs ont découvert dans le Dakota du Nord une patte de dinosaure très bien conservée...]]></description>
	
	
        <itunes:duration>187</itunes:duration>
	
	
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	<title>La plus lointaine des galaxies observ&#233;es</title>
	<link>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/la-plus-lointaine-des-galaxies-observees-87055</link>
	<guid>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/la-plus-lointaine-des-galaxies-observees-87055?id_document=56530</guid>
	<comments>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/la-plus-lointaine-des-galaxies-observees-87055#comments</comments>
	<pubDate>Mon, 15 Aug 2022 00:00:00 +0200</pubDate>
	
	
	<description><![CDATA[Le télescope japonais SUBARU a permis d’observer la galaxie la plus lointaine, et donc la plus ancienne connue]]></description>
	
	
        <itunes:duration>180</itunes:duration>
	
	
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	<itunes:author>Sylvie Vauclair</itunes:author>
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	<title>Des sons &#224; deux vitesses sur Mars</title>
	<link>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/des-sons-a-deux-vitesses-sur-mars-86982</link>
	<guid>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/des-sons-a-deux-vitesses-sur-mars-86982?id_document=56332</guid>
	<comments>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/des-sons-a-deux-vitesses-sur-mars-86982#comments</comments>
	<pubDate>Fri, 12 Aug 2022 00:00:00 +0200</pubDate>
	
	
	<description><![CDATA[Le son se propage sur Mars à deux vitesses différentes suivant la fréquence]]></description>
	
	
        <itunes:duration>212</itunes:duration>
	
	
	<enclosure url="https://www.radiopresence.com/IMG/mp3/11042022_astrophysique.mp3" length="4453073" type="audio/mpeg" />
	
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	<itunes:author>Sylvie Vauclair</itunes:author>
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	<title>Heure d'&#233;t&#233; heure d'hiver</title>
	<link>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/heure-d-ete-heure-d-hiver-86948</link>
	<guid>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/heure-d-ete-heure-d-hiver-86948?id_document=56125</guid>
	<comments>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/heure-d-ete-heure-d-hiver-86948#comments</comments>
	<pubDate>Thu, 11 Aug 2022 00:00:00 +0200</pubDate>
	
	
	<description><![CDATA[Contrairement aux apparences, l’heure d’été n’est pas bonne pour la santé]]></description>
	
	
        <itunes:duration>214</itunes:duration>
	
	
	<enclosure url="https://www.radiopresence.com/IMG/mp3/04042022_astrophysique.mp3" length="4373091" type="audio/mpeg" />
	
	<media:hash algo="md5">093027e0e13abb4cc6d1bcdf2f986b98</media:hash>
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	<itunes:author>Sylvie Vauclair</itunes:author>
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	<title>Un tripl&#233; de syst&#232;mes plan&#233;taires</title>
	<link>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/un-triple-de-systemes-planetaires-86915</link>
	<guid>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/un-triple-de-systemes-planetaires-86915?id_document=55910</guid>
	<comments>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/un-triple-de-systemes-planetaires-86915#comments</comments>
	<pubDate>Wed, 10 Aug 2022 00:00:00 +0200</pubDate>
	
	
	<description><![CDATA[Deux jeunes étoiles formant un système double, situées à 980 années-lumière, ont trois systèmes planétaires en formation : un autour de chaque étoile plus un grand autour des deux à la fois. image : © Díaz-Rodríguez et al., Alma]]></description>
	
	
        <itunes:duration>177</itunes:duration>
	
	
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	<title>La division du temps</title>
	<link>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/la-division-du-temps-86882</link>
	<guid>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/la-division-du-temps-86882?id_document=55707</guid>
	<comments>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/la-division-du-temps-86882#comments</comments>
	<pubDate>Tue, 09 Aug 2022 00:00:00 +0200</pubDate>
	
	
	<description><![CDATA[Notre division du temps date des sumériens, même si beaucoup de changements dans la mesure du temps ont eu lieu depuis !]]></description>
	
	
        <itunes:duration>217</itunes:duration>
	
	
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	<title>Briques du vivant</title>
	<link>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/briques-du-vivant-86850</link>
	<guid>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/briques-du-vivant-86850?id_document=55522</guid>
	<comments>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/briques-du-vivant-86850#comments</comments>
	<pubDate>Mon, 08 Aug 2022 00:00:00 +0200</pubDate>
	
	
	<description><![CDATA[On trouve dans l’espace des molécules organiques de base du vivant. Mais ce n’est pas encore le vivant !]]></description>
	
	
        <itunes:duration>178</itunes:duration>
	
	
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	<itunes:author>Sylvie Vauclair</itunes:author>
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	<title>L'humanit&#233; terrestre</title>
	<link>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/l-humanite-terrestre-86776</link>
	<guid>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/l-humanite-terrestre-86776?id_document=55282</guid>
	<comments>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/l-humanite-terrestre-86776#comments</comments>
	<pubDate>Fri, 05 Aug 2022 00:00:00 +0200</pubDate>
	
	
	<description><![CDATA[L’humanité devrait s’unir pour défendre son avenir global sur la Terre, et non développer des luttes de pouvoir.]]></description>
	
	
        <itunes:duration>169</itunes:duration>
	
	
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	<media:hash algo="md5">e7842a22e9450173791c731b18c82b39</media:hash>
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	<itunes:author>Sylvie Vauclair</itunes:author>
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	<title>Les col&#232;res du Soleil</title>
	<link>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/les-coleres-du-soleil-86745</link>
	<guid>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/les-coleres-du-soleil-86745?id_document=55071</guid>
	<comments>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/les-coleres-du-soleil-86745#comments</comments>
	<pubDate>Thu, 04 Aug 2022 00:00:00 +0200</pubDate>
	
	
	<description><![CDATA[Le Soleil est calme à l’intérieur, mais il peut avoir de grosses colères superficielles]]></description>
	
	
        <itunes:duration>197</itunes:duration>
	
	
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	<itunes:author>Sylvie Vauclair</itunes:author>
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	<title>Un syst&#232;me plan&#233;taire autour de Proxima du Centaure</title>
	<link>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/un-systeme-planetaire-autour-de-proxima-du-centaure-87509</link>
	<guid>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/un-systeme-planetaire-autour-de-proxima-du-centaure-87509?id_document=54880</guid>
	<comments>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/un-systeme-planetaire-autour-de-proxima-du-centaure-87509#comments</comments>
	<pubDate>Tue, 30 Aug 2022 00:00:00 +0200</pubDate>
	
	
	<description><![CDATA[Une troisième planète a été découverte autour de l’étoile Proxima]]></description>
	
	
        <itunes:duration>232</itunes:duration>
	
	
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	<itunes:author>Sylvie Vauclair</itunes:author>
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	<title>On se bouscule autour de Mars ...</title>
	<link>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/on-se-bouscule-autour-de-mars-87463</link>
	<guid>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/on-se-bouscule-autour-de-mars-87463?id_document=54681</guid>
	<comments>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/on-se-bouscule-autour-de-mars-87463#comments</comments>
	<pubDate>Mon, 29 Aug 2022 00:00:00 +0200</pubDate>
	
	
	<description><![CDATA[Plusieurs satellites tournent actuellement autour de Mars, dont Al Amal, envoyé par les émirats arabes unis ; l’équipe responsable est essentiellement composée de femmes...]]></description>
	
	
        <itunes:duration>176</itunes:duration>
	
	
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	<itunes:author>Sylvie Vauclair</itunes:author>
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	<title>Un trou noir cr&#233;ateur d'&#233;toiles</title>
	<link>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/un-trou-noir-createur-d-etoiles-87389</link>
	<guid>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/un-trou-noir-createur-d-etoiles-87389?id_document=54307</guid>
	<comments>https://www.radiopresence.com/emissions/culture/decouverte/chronique-astrophysique/article/un-trou-noir-createur-d-etoiles-87389#comments</comments>
	<pubDate>Fri, 26 Aug 2022 00:00:00 +0200</pubDate>
	
	
	<description><![CDATA[Les trous noirs ne se contentent pas d’avaler ce qui passe à portée d’eux, ils émettent aussi de puissants jets de matière. Certains peuvent conduire à la formation de nouvelles étoiles]]></description>
	
	
        <itunes:duration>220</itunes:duration>
	
	
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