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Les origines de la vie | CNRS Le journal
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class="left"> <h6 class="element-invisible">Vous êtes ici</h6><div class="breadcrumb"><a href="/">Accueil</a> / <a href="/infographies">Infographies</a> / <a href="/infographies/les-origines-de-la-vie" class="active">Les origines de la vie</a></div> </div> </div> </div> <h1 class="title">Les origines de la vie</h1> </div> </div> <div id="content"> <div class="tabs"></div> <div id="content-area"> <div class="region region-content"> <div id="block-views-dossier_bandeau-block" class="block block-views block-odd first clearfix"> <div class="block-inner"> <div class="content" > <div class="view view-dossier-bandeau view-id-dossier_bandeau view-display-id-block view-dom-id-f39d266278a9a53ac45f58c2fc294d54"> <div class="view-header"> <div class="left format-wrapper"> <div class="format-dossier">Dossier</div> </div> <div class="left date-wrapper"> <div class="dossier-paru">Paru le <span class="date-display-single">28.10.2016</span></div> <div class="dossier-maj"></div> </div> <div class="left title-wrapper"> <div class="dossier-titre">Les énigmes de la vie</div> </div> </div> <div class="view-content"> <div class="bandeau-dossier-header views-row"> <a href="/dossiers/les-enigmes-de-la-vie" class="icon">Voir le dossier</a> </div> <div class="views-row views-row-1 views-row-odd views-row-first"> <div class="views-field views-field-type article"> <span class="field-content">Article</span> </div> <div class="views-field views-field-field-visuel-principal"> <div class="field-content"><a href="/articles/revisiter-la-question-du-vivant"><div class="asset-wrapper asset aid-2856 asset-image"> <div class="content"> <img src="https://lejournal.cnrs.fr/sites/default/files/styles/vignettes-billet-conseil_dossier-bandeau/public/assets/images/622-06842643_72dpi.jpg?itok=s6Xk5Vju" width="212" height="140" alt="" title=" ©MASTERFILE" /></div> </div> </a></div> </div> <div class="views-field views-field-title"> <span class="field-content"><a href="/articles/revisiter-la-question-du-vivant">Revisiter la question du vivant</a></span> </div> </div> <div class="views-row views-row-2 views-row-even"> <div class="views-field views-field-type article"> <span class="field-content">Article</span> </div> <div class="views-field views-field-field-visuel-principal"> <div class="field-content"><a href="/articles/un-souffle-de-vie-dans-lenfer-de-dallol"><div class="asset-wrapper asset aid-2826 asset-image"> <div class="content"> <img src="https://lejournal.cnrs.fr/sites/default/files/styles/vignettes-billet-conseil_dossier-bandeau/public/assets/images/o.grunewald_dallol_a_la_recherche_des_limites_de_la_vie_07_72dpi.jpg?itok=qQFZ33r0" width="212" height="140" alt="Dallol, formations hydrothermales" title=" ©O.GRUNEWALD" /></div> </div> </a></div> </div> <div class="views-field views-field-title"> <span class="field-content"><a href="/articles/un-souffle-de-vie-dans-lenfer-de-dallol">Un souffle de vie dans l’enfer de Dallol</a></span> </div> </div> <div class="views-row views-row-3 views-row-odd"> <div class="views-field views-field-type video"> <span class="field-content">Vidéo</span> </div> <div class="views-field views-field-field-visuel-principal"> <div class="field-content"><a href="/videos/la-complexite-du-vivant"><div class="asset-wrapper asset aid-2780 asset-image"> <div class="content"> <img src="https://lejournal.cnrs.fr/sites/default/files/styles/vignettes-billet-conseil_dossier-bandeau/public/assets/images/photo_video_complexite_vivant.jpg?itok=NRUuvZhz" width="212" height="140" alt="Appareil reproducteur du ver Caenorhabditis elegans vu en microscopie confocale à fluorescence." title=" ©Julien BURGER/Institut Jacques Monod/CNRS Photothèque" /></div> </div> </a></div> </div> <div class="views-field views-field-title"> <span class="field-content"><a href="/videos/la-complexite-du-vivant">La complexité du vivant</a></span> </div> </div> <div class="views-row views-row-4 views-row-even"> <div class="views-field views-field-type article"> <span class="field-content">Article</span> </div> <div class="views-field views-field-field-visuel-principal"> <div class="field-content"><a href="/articles/dou-vient-la-vie"><div class="asset-wrapper asset aid-2857 asset-image"> <div class="content"> <img src="https://lejournal.cnrs.fr/sites/default/files/styles/vignettes-billet-conseil_dossier-bandeau/public/assets/images/idm-021080013_72dpi_0.jpg?itok=nNn8vVRq" width="212" height="140" alt="" title=" ©IDREAMSTOCK/AGE FOTOSTOCK" /></div> </div> </a></div> </div> <div class="views-field views-field-title"> <span class="field-content"><a href="/articles/dou-vient-la-vie">D'où vient la vie ?</a></span> </div> </div> <div class="views-row views-row-5 views-row-odd"> <div class="views-field views-field-type article"> <span class="field-content">Article</span> </div> <div class="views-field views-field-field-visuel-principal"> <div class="field-content"><a href="/articles/un-systeme-solaire-plus-habitable-que-prevu"><div class="asset-wrapper asset aid-1315 asset-image"> <div class="content"> <img src="https://lejournal.cnrs.fr/sites/default/files/styles/vignettes-billet-conseil_dossier-bandeau/public/assets/images/211802main_titan-artistconcept-hires_1200x900.jpg?itok=yqa9Mlx0" width="212" height="140" alt="Vue d'artiste de la surface de Titan, satellite de Saturne" title=" ©S. HOBBS/NASA.GOV" /></div> </div> </a></div> </div> <div class="views-field views-field-title"> <span class="field-content"><a href="/articles/un-systeme-solaire-plus-habitable-que-prevu">Un système solaire plus habitable que prévu</a></span> </div> </div> <div class="views-row views-row-6 views-row-even"> <div class="views-field views-field-type article"> <span class="field-content">Article</span> </div> <div class="views-field views-field-field-visuel-principal"> <div class="field-content"><a href="/articles/jusquou-manipuler-le-vivant"><div class="asset-wrapper asset aid-541 asset-image"> <div class="content"> <img src="https://lejournal.cnrs.fr/sites/default/files/styles/vignettes-billet-conseil_dossier-bandeau/public/assets/images/protocell_large_01-low-res-_recadree_0.jpg?itok=be6cfuTP" width="212" height="140" alt="Modèle de protocellule" title=" ©J. IWASA ; J. SZOSTAK/HARVARD MEDICAL SCHOOL" /></div> </div> </a></div> </div> <div class="views-field views-field-title"> <span class="field-content"><a href="/articles/jusquou-manipuler-le-vivant">Jusqu’où manipuler le vivant ?</a></span> </div> </div> <div class="views-row views-row-7 views-row-odd"> <div class="views-field views-field-type billet"> <span class="field-content">Point de vue</span> </div> <div class="views-field views-field-field-visuel-principal"> <div class="field-content"><a href="/billets/imaginer-une-autre-evolution-de-la-vie-sur-terre"><div class="asset-wrapper asset aid-2344 asset-image"> <div class="content"> <img src="https://lejournal.cnrs.fr/sites/default/files/styles/vignettes-billet-conseil_dossier-bandeau/public/assets/images/42-31308882_72dpi.jpg?itok=5reB0kRw" width="212" height="140" alt="Imaginer une autre évolution de la vie" title=" ©M. 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class="nombre-commentaires"> 5 <span class="comz-tab">commentaires</span> </div> <div class="rss"><a href="/crss/node/1825">Flux RSS</a></div> </div> </div> <div id="comments" class="comment-wrapper"> <a id="comment-1058"></a> <article class="comment odd"> <header> <h3 class="title"><a href="/comment/1058#comment-1058" class="permalink" rel="bookmark">Bonjour. Étant</a></h3> <span class="submitted"><span class="username">Yam &#039;s</span> le 19 Avril 2018 à 04h34</span> </header> <div class="content"> Bonjour. Étant microbiologiste, la question de l'origine de la vie est forcément récurrente dans ma réflexion. Et on est là, immédiatement confronté à une question épistémologique très pointue car l'observateur et son observation sont absolument confondus car si la vie a bien une origine unique (ou si on peut une cohésion moléculaire appelée vie) cette vie s'est transmise à moi de façon intacte et ininterrompue depuis son origine jusqu'à moi. <form class="comment-form" action="/infographies/les-origines-de-la-vie" method="post" id="comment-form" accept-charset="UTF-8"><div><div class="form-item form-type-textfield form-item-name"> <label for="edit-name--2">Votre nom </label> <input type="text" id="edit-name--2" name="name" value="" size="30" maxlength="60" class="form-text" /> </div> <div class="field-type-text-long field-name-comment-body field-widget-text-textarea form-wrapper" id="edit-comment-body"><div id="comment-body-add-more-wrapper"><div class="form-item form-type-textarea form-item-comment-body-und-0-value"> <label for="edit-comment-body-und-0-value">Comment <span class="form-required" title="Ce champ est requis.">*</span></label> <div class="form-textarea-wrapper resizable"><textarea class="text-full form-textarea required" id="edit-comment-body-und-0-value" name="comment_body[und][0][value]" cols="60" rows="5"></textarea></div> </div> </div></div><input type="hidden" name="form_build_id" value="form-5aGhI__1Cbge8Sl7fjXVFEvjzt7aTJTooiT18xJ-PoA" /> <input type="hidden" name="form_id" value="comment_form_node_infographie_18251058" /> <div class="form-actions form-wrapper" id="edit-actions--2"><input type="submit" id="edit-submit--2" name="op" value="Enregistrer" class="form-submit" /></div><div class="url-textfield"><div class="form-item form-type-textfield form-item-url"> <label for="edit-url">Leave this field blank </label> <input autocomplete="off" type="text" id="edit-url" name="url" value="" size="20" maxlength="128" class="form-text" /> </div> </div><div class="hybridauth-widget-wrapper"><div class="item-list"><ul class="hybridauth-widget"><li class="first"><a href="/hybridauth/window/Google?destination=node/1825&destination_error=node/1825" title="Google" class="hybridauth-widget-provider hybridauth-onclick-popup" rel="nofollow" data-hybridauth-provider="Google" data-hybridauth-url="/hybridauth/window/Google?destination=node/1825&destination_error=node/1825" data-ajax="false" data-hybridauth-width="800" data-hybridauth-height="500"><span class="hybridauth-icon google hybridauth-icon-hybridauth-32 hybridauth-google hybridauth-google-hybridauth-32" title="Google"></span> Se connecter avec Google</a></li> <li><a href="/hybridauth/window/Twitter?destination=node/1825&destination_error=node/1825" title="Twitter" class="hybridauth-widget-provider hybridauth-onclick-popup" rel="nofollow" data-hybridauth-provider="Twitter" data-hybridauth-url="/hybridauth/window/Twitter?destination=node/1825&destination_error=node/1825" data-ajax="false" data-hybridauth-width="800" data-hybridauth-height="500"><span class="hybridauth-icon twitter hybridauth-icon-hybridauth-32 hybridauth-twitter hybridauth-twitter-hybridauth-32" title="Twitter"></span> Se connecter avec Twitter</a></li> <li class="last"><a href="/hybridauth/window/Facebook?destination=node/1825&destination_error=node/1825" title="Facebook" class="hybridauth-widget-provider hybridauth-onclick-popup" rel="nofollow" data-hybridauth-provider="Facebook" data-hybridauth-url="/hybridauth/window/Facebook?destination=node/1825&destination_error=node/1825" data-ajax="false" data-hybridauth-width="600" data-hybridauth-height="400"><span class="hybridauth-icon facebook hybridauth-icon-hybridauth-32 hybridauth-facebook hybridauth-facebook-hybridauth-32" title="Facebook"></span> Se connecter avec Facebook</a></li> </ul></div></div> <div id="block-fboauth-login" class="block block-fboauth block-even last clearfix"> <div class="content"> <a class="fboauth-popup facebook-action-connect" rel="nofollow" href="https://www.facebook.com/v2.3/dialog/oauth?client_id=623982377657761&redirect_uri=https%3A//lejournal.cnrs.fr/fboauth/connect%3Fdestination%3Dnode%252F1825&display=popup&scope=email%2Cuser_birthday"><span class="facebook-icon"></span>Se connecter avec Facebook</a> </div> </div> <div id='replace_preview_comment_form_node_infographie_18251058' class='ideal-comment-preview-area comment-preview'><div id="edit-comment-preview" class="form-item form-type-item"> </div> </div></div></form> </div> <div class="links"><ul class="links inline"><li class="comment_forbidden first last"><span><a href="/user/login?destination=node/1825%23comment-form">Connectez-vous</a> ou <a href="/user/register?destination=node/1825%23comment-form">inscrivez-vous</a> pour publier un commentaire</span></li> </ul></div> </article><!-- /comment --><a id="comment-1062"></a> <article class="comment even"> <header> <h3 class="title"><a href="/comment/1062#comment-1062" class="permalink" rel="bookmark">Ah ! la vie ! Pour notre</a></h3> <span class="submitted"><span class="username">Bernard Kerdraon</span> le 22 Avril 2018 à 15h14</span> </header> <div class="content"> Ah ! la vie ! Pour notre planète l'important c'est la vie; pour l'Homme qui la peuple faisons en sorte que l'important ne soit pas de sévir... Merci pour ce dossier très pédagogique.<form class="comment-form" action="/infographies/les-origines-de-la-vie" method="post" id="comment-form--2" accept-charset="UTF-8"><div><div class="form-item form-type-textfield form-item-name"> <label for="edit-name--3">Votre nom </label> <input type="text" id="edit-name--3" name="name" value="" size="30" maxlength="60" class="form-text" /> </div> <div class="field-type-text-long field-name-comment-body field-widget-text-textarea form-wrapper" id="edit-comment-body--2"><div id="comment-body-add-more-wrapper--2"><div class="form-item form-type-textarea form-item-comment-body-und-0-value"> <label for="edit-comment-body-und-0-value--2">Comment <span class="form-required" title="Ce champ est requis.">*</span></label> <div class="form-textarea-wrapper resizable"><textarea class="text-full form-textarea required" id="edit-comment-body-und-0-value--2" name="comment_body[und][0][value]" cols="60" rows="5"></textarea></div> </div> </div></div><input type="hidden" name="form_build_id" value="form-8-6yAuQmz_R4MLhLOQdzUb6p1DRqrTmg5Ury0qZPDUg" /> <input type="hidden" name="form_id" value="comment_form_node_infographie_18251062" /> <div class="form-actions form-wrapper" id="edit-actions--3"><input type="submit" id="edit-submit--3" name="op" value="Enregistrer" class="form-submit" /></div><div class="url-textfield"><div class="form-item form-type-textfield form-item-url"> <label for="edit-url--2">Leave this field blank </label> <input autocomplete="off" type="text" id="edit-url--2" name="url" value="" size="20" maxlength="128" class="form-text" /> </div> </div><div class="hybridauth-widget-wrapper"><div class="item-list"><ul class="hybridauth-widget"><li class="first"><a href="/hybridauth/window/Google?destination=node/1825&destination_error=node/1825" title="Google" class="hybridauth-widget-provider hybridauth-onclick-popup" rel="nofollow" data-hybridauth-provider="Google" data-hybridauth-url="/hybridauth/window/Google?destination=node/1825&destination_error=node/1825" data-ajax="false" data-hybridauth-width="800" data-hybridauth-height="500"><span class="hybridauth-icon google hybridauth-icon-hybridauth-32 hybridauth-google hybridauth-google-hybridauth-32" title="Google"></span> Se connecter avec Google</a></li> <li><a href="/hybridauth/window/Twitter?destination=node/1825&destination_error=node/1825" title="Twitter" class="hybridauth-widget-provider hybridauth-onclick-popup" rel="nofollow" data-hybridauth-provider="Twitter" data-hybridauth-url="/hybridauth/window/Twitter?destination=node/1825&destination_error=node/1825" data-ajax="false" data-hybridauth-width="800" data-hybridauth-height="500"><span class="hybridauth-icon twitter hybridauth-icon-hybridauth-32 hybridauth-twitter hybridauth-twitter-hybridauth-32" title="Twitter"></span> Se connecter avec Twitter</a></li> <li class="last"><a href="/hybridauth/window/Facebook?destination=node/1825&destination_error=node/1825" title="Facebook" class="hybridauth-widget-provider hybridauth-onclick-popup" rel="nofollow" data-hybridauth-provider="Facebook" data-hybridauth-url="/hybridauth/window/Facebook?destination=node/1825&destination_error=node/1825" data-ajax="false" data-hybridauth-width="600" data-hybridauth-height="400"><span class="hybridauth-icon facebook hybridauth-icon-hybridauth-32 hybridauth-facebook hybridauth-facebook-hybridauth-32" title="Facebook"></span> Se connecter avec Facebook</a></li> </ul></div></div> <div id="block-fboauth-login" class="block block-fboauth block-even last clearfix"> <div class="content"> <a class="fboauth-popup facebook-action-connect" rel="nofollow" href="https://www.facebook.com/v2.3/dialog/oauth?client_id=623982377657761&redirect_uri=https%3A//lejournal.cnrs.fr/fboauth/connect%3Fdestination%3Dnode%252F1825&display=popup&scope=email%2Cuser_birthday"><span class="facebook-icon"></span>Se connecter avec Facebook</a> </div> </div> <div id='replace_preview_comment_form_node_infographie_18251062' class='ideal-comment-preview-area comment-preview'><div id="edit-comment-preview--2" class="form-item form-type-item"> </div> </div></div></form> </div> <div class="links"><ul class="links inline"><li class="comment_forbidden first last"><span><a href="/user/login?destination=node/1825%23comment-form">Connectez-vous</a> ou <a href="/user/register?destination=node/1825%23comment-form">inscrivez-vous</a> pour publier un commentaire</span></li> </ul></div> </article><!-- /comment --><a id="comment-1214"></a> <article class="comment odd"> <header> <h3 class="title"><a href="/comment/1214#comment-1214" class="permalink" rel="bookmark">Bonjour, </a></h3> <span class="submitted"><span class="username">Étirév Anwen</span> le 5 Septembre 2018 à 14h54</span> </header> <div class="content"> Bonjour, Permettez deux mots sur les conceptions primitives relatives à l'origine de la vie. Merci. Toute l’antiquité a proclamé la genèse naturelle des êtres organisés, et il ne pouvait pas en être autrement puisqu’elle ne connaissait pas le Dieu personnel dont les modernes ont fait la cause de toutes choses. Le seul Dieu que l’antiquité connaissait était l’Élément-Créateur, le Principe subtil qui engendre la vie : l’Oxygène. Il fallait donc bien affirmer la genèse naturelle puisque l’on savait que le Principe de la vie est un agent de la Nature. Le surnaturel est une conception moderne qui caractérise une ère de décadence intellectuelle et d’ignorance que le genre humain a traversée mais dont nous sommes à la veille de sortir. Dans toutes les cosmogonies de l’antiquité on a représenté, à l’origine des choses, un état de chaos, c’est-à-dire d’absence de tout ce qui anime la nature, l’absence de lumière, d’eau, de vie. Cet état répond à la période primitive de formation des astres, période pendant laquelle ils ne sont encore qu’un amas nébuleux. Ces nébuleuses sont composées de molécules qui se réunissent, s’agrègent, se rapprochent de plus en plus, de manière à former un noyau solide, mais sur lequel le feu, la vie n’existe pas. Nous devons supposer que tous les astres, y compris la terre, ont été formés ainsi, et non pas de fragments détachés d’un soleil, comme le prétend la théorie de Laplace. Cet état de chaos dure, pour la terre, tant qu’elle n’est pas fécondée par la radiation solaire, ce qui nous oblige à supposer qu’à l’époque chaotique de la terre le soleil n’était pas encore incandescent. Il était ce que sont actuellement les planètes, un astre obscur, mais dont la surface était, sans doute, oxydée comme l’est la croûte terrestre. Le jour où cette oxydation détermina l’incandescence de l’astre, la radiation qui se répandit dans l’espace alla féconder tous les corps célestes qui se trouvaient dans l’aire immense de son action. Aussitôt « la lumière fut », fait qui a toujours été considéré comme la première manifestation de la divinité, et en effet, la matière n’acquiert ses propriétés « Divines », autrement dit, Dieu se manifeste, que dans l’état igné. Le second acte de l’Élément-Divin est la création de l’eau, fait qui est encore confirmé par la science. Pour qu’il y ait de l’eau il faut qu’il y ait de l’Oxygène et que cet Oxygène se trouve à l’état « naissant », c’est-à-dire « radiant », pour se combiner avec l’hydrogène diffusé dans l’espace. Donc, pendant la période chaotique ou nébulaire il n’y a ni eau ni lumière ; après cela il est inutile de dire qu’il n’y a pas de vie. La radiation qui apporte la lumière et donne naissance à l’eau fait naître, en même temps, à la surface terrestre la « vie ». Ces trois manifestations sont solidaires l’une de l’autre et toutes les écritures de l’antiquité nous montrent l’accomplissement de ce premier acte de la Genèse. « Le Verbe était porté sur un principe humide et il en sortit « le feu pur et léger » qui se perdit dans les air. L’air léger, semblable à l’esprit, (la radiation), occupe le milieu entre l’eau et le feu ; et la terre et les eaux étaient tellement mêlées ensemble que la surface de la terre, enveloppée par les eaux, n’apparaissait en aucun point. Elles furent toutes deux agitées par le « verbe de l’esprit », parce qu’il était porté au-dessus d’elles ». Hermès Trismégiste. Remarquons que le mot « esprit » est toujours donné, dans les mythologies de l’antiquité, à la matière à l’état atomique, c’est-à-dire active, mais particulièrement à l’Oxygène « naissant », autrement dit au courant électrique. Le mot s’est perpétué dans l’histoire et est arrivé jusqu’à nous. Sa signification seule s’est altérée. Nous la rétablissons. Il nous reste à prouver les faits que nous avançons en montrant qu’ils ne sont que le fond même de la tradition. Remontons donc jusqu’à l’origine des idées qui nous ont été transmises par les générations et nous verrons que ces idées sont les principes fondamentaux et indestructibles de la science humaine. Liens : https://livresdefemmeslivresdeverites.blogspot.com/2017/07/la-vie.html https://livresdefemmeslivresdeverites.blogspot.com/2017/07/dieu.html Cordialement.<form class="comment-form" action="/infographies/les-origines-de-la-vie" method="post" id="comment-form--3" accept-charset="UTF-8"><div><div class="form-item form-type-textfield form-item-name"> <label for="edit-name--4">Votre nom </label> <input type="text" id="edit-name--4" name="name" value="" size="30" maxlength="60" class="form-text" /> </div> <div class="field-type-text-long field-name-comment-body field-widget-text-textarea form-wrapper" id="edit-comment-body--3"><div id="comment-body-add-more-wrapper--3"><div class="form-item form-type-textarea form-item-comment-body-und-0-value"> <label for="edit-comment-body-und-0-value--3">Comment <span class="form-required" title="Ce champ est requis.">*</span></label> <div class="form-textarea-wrapper resizable"><textarea class="text-full form-textarea required" id="edit-comment-body-und-0-value--3" name="comment_body[und][0][value]" cols="60" rows="5"></textarea></div> </div> </div></div><input type="hidden" name="form_build_id" value="form-RUPHLRy2COLW_nAWepuFW9nRPMVJtTD7g4wbTzDxVZo" /> <input type="hidden" name="form_id" value="comment_form_node_infographie_18251214" /> <div class="form-actions form-wrapper" id="edit-actions--4"><input type="submit" id="edit-submit--4" name="op" value="Enregistrer" class="form-submit" /></div><div class="url-textfield"><div class="form-item form-type-textfield form-item-url"> <label for="edit-url--3">Leave this field blank </label> <input autocomplete="off" type="text" id="edit-url--3" name="url" value="" size="20" maxlength="128" class="form-text" /> </div> </div><div class="hybridauth-widget-wrapper"><div class="item-list"><ul class="hybridauth-widget"><li class="first"><a href="/hybridauth/window/Google?destination=node/1825&destination_error=node/1825" title="Google" class="hybridauth-widget-provider hybridauth-onclick-popup" rel="nofollow" data-hybridauth-provider="Google" data-hybridauth-url="/hybridauth/window/Google?destination=node/1825&destination_error=node/1825" data-ajax="false" data-hybridauth-width="800" data-hybridauth-height="500"><span class="hybridauth-icon google hybridauth-icon-hybridauth-32 hybridauth-google hybridauth-google-hybridauth-32" title="Google"></span> Se connecter avec Google</a></li> <li><a href="/hybridauth/window/Twitter?destination=node/1825&destination_error=node/1825" title="Twitter" class="hybridauth-widget-provider hybridauth-onclick-popup" rel="nofollow" data-hybridauth-provider="Twitter" data-hybridauth-url="/hybridauth/window/Twitter?destination=node/1825&destination_error=node/1825" data-ajax="false" data-hybridauth-width="800" data-hybridauth-height="500"><span class="hybridauth-icon twitter hybridauth-icon-hybridauth-32 hybridauth-twitter hybridauth-twitter-hybridauth-32" title="Twitter"></span> Se connecter avec Twitter</a></li> <li class="last"><a href="/hybridauth/window/Facebook?destination=node/1825&destination_error=node/1825" title="Facebook" class="hybridauth-widget-provider hybridauth-onclick-popup" rel="nofollow" data-hybridauth-provider="Facebook" data-hybridauth-url="/hybridauth/window/Facebook?destination=node/1825&destination_error=node/1825" data-ajax="false" data-hybridauth-width="600" data-hybridauth-height="400"><span class="hybridauth-icon facebook hybridauth-icon-hybridauth-32 hybridauth-facebook hybridauth-facebook-hybridauth-32" title="Facebook"></span> Se connecter avec Facebook</a></li> </ul></div></div> <div id="block-fboauth-login" class="block block-fboauth block-even last clearfix"> <div class="content"> <a class="fboauth-popup facebook-action-connect" rel="nofollow" href="https://www.facebook.com/v2.3/dialog/oauth?client_id=623982377657761&redirect_uri=https%3A//lejournal.cnrs.fr/fboauth/connect%3Fdestination%3Dnode%252F1825&display=popup&scope=email%2Cuser_birthday"><span class="facebook-icon"></span>Se connecter avec Facebook</a> </div> </div> <div id='replace_preview_comment_form_node_infographie_18251214' class='ideal-comment-preview-area comment-preview'><div id="edit-comment-preview--3" class="form-item form-type-item"> </div> </div></div></form> </div> <div class="links"><ul class="links inline"><li class="comment_forbidden first last"><span><a href="/user/login?destination=node/1825%23comment-form">Connectez-vous</a> ou <a href="/user/register?destination=node/1825%23comment-form">inscrivez-vous</a> pour publier un commentaire</span></li> </ul></div> </article><!-- /comment --><a id="comment-1239"></a> <article class="comment even"> <header> <h3 class="title"><a href="/comment/1239#comment-1239" class="permalink" rel="bookmark">Il est quasi impossible de</a></h3> <span class="submitted"><span class="username">joel valendoff</span> le 28 Octobre 2018 à 20h09</span> </header> <div class="content"> Il est quasi impossible de trouver un milieu sans vie sur terre. La vie est donc probablement apparue au cours de la formation de notre planète et peut être plus tôt qu'on l'imagine. Dans ses profondeurs, les minéraux ont servi de terreau aux molécules organiques et du hasard des conditions physico chimiques, les premières cellules vivantes se sont formées au sein même de la matière terrestre. Les micro organismes se sont ensuite organisés, complexifiés pour coloniser toutes les niches accessibles, les milieux marins, le sol puis l'air. La terre est un organisme vivant, en partie minéral et organique. A son image, tout organisme vivant est un conglomérat d'atomes minéraux et organiques issus des entrailles terrestres. D'autres planètes très proches, à priori arides et sans vie à leur surface, pourraient grouiller de vie dans leur profondeur.<form class="comment-form" action="/infographies/les-origines-de-la-vie" method="post" id="comment-form--4" accept-charset="UTF-8"><div><div class="form-item form-type-textfield form-item-name"> <label for="edit-name--5">Votre nom </label> <input type="text" id="edit-name--5" name="name" value="" size="30" maxlength="60" class="form-text" /> </div> <div class="field-type-text-long field-name-comment-body field-widget-text-textarea form-wrapper" id="edit-comment-body--4"><div id="comment-body-add-more-wrapper--4"><div class="form-item form-type-textarea form-item-comment-body-und-0-value"> <label for="edit-comment-body-und-0-value--4">Comment <span class="form-required" title="Ce champ est requis.">*</span></label> <div class="form-textarea-wrapper resizable"><textarea class="text-full form-textarea required" id="edit-comment-body-und-0-value--4" name="comment_body[und][0][value]" cols="60" rows="5"></textarea></div> </div> </div></div><input type="hidden" name="form_build_id" value="form-rIz6gNmWCopC_PSnbabo5tQqd63hb33BrCMVJ0KjHEc" /> <input type="hidden" name="form_id" value="comment_form_node_infographie_18251239" /> <div class="form-actions form-wrapper" id="edit-actions--5"><input type="submit" id="edit-submit--5" name="op" value="Enregistrer" class="form-submit" /></div><div class="url-textfield"><div class="form-item form-type-textfield form-item-url"> <label for="edit-url--4">Leave this field blank </label> <input autocomplete="off" type="text" id="edit-url--4" name="url" value="" size="20" maxlength="128" class="form-text" /> </div> </div><div class="hybridauth-widget-wrapper"><div class="item-list"><ul class="hybridauth-widget"><li class="first"><a href="/hybridauth/window/Google?destination=node/1825&destination_error=node/1825" title="Google" class="hybridauth-widget-provider hybridauth-onclick-popup" rel="nofollow" data-hybridauth-provider="Google" data-hybridauth-url="/hybridauth/window/Google?destination=node/1825&destination_error=node/1825" data-ajax="false" data-hybridauth-width="800" data-hybridauth-height="500"><span class="hybridauth-icon google hybridauth-icon-hybridauth-32 hybridauth-google hybridauth-google-hybridauth-32" title="Google"></span> Se connecter avec Google</a></li> <li><a href="/hybridauth/window/Twitter?destination=node/1825&destination_error=node/1825" title="Twitter" class="hybridauth-widget-provider hybridauth-onclick-popup" rel="nofollow" data-hybridauth-provider="Twitter" data-hybridauth-url="/hybridauth/window/Twitter?destination=node/1825&destination_error=node/1825" data-ajax="false" data-hybridauth-width="800" data-hybridauth-height="500"><span class="hybridauth-icon twitter hybridauth-icon-hybridauth-32 hybridauth-twitter hybridauth-twitter-hybridauth-32" title="Twitter"></span> Se connecter avec Twitter</a></li> <li class="last"><a href="/hybridauth/window/Facebook?destination=node/1825&destination_error=node/1825" title="Facebook" class="hybridauth-widget-provider hybridauth-onclick-popup" rel="nofollow" data-hybridauth-provider="Facebook" data-hybridauth-url="/hybridauth/window/Facebook?destination=node/1825&destination_error=node/1825" data-ajax="false" data-hybridauth-width="600" data-hybridauth-height="400"><span class="hybridauth-icon facebook hybridauth-icon-hybridauth-32 hybridauth-facebook hybridauth-facebook-hybridauth-32" title="Facebook"></span> Se connecter avec Facebook</a></li> </ul></div></div> <div id="block-fboauth-login" class="block block-fboauth block-even last clearfix"> <div class="content"> <a class="fboauth-popup facebook-action-connect" rel="nofollow" href="https://www.facebook.com/v2.3/dialog/oauth?client_id=623982377657761&redirect_uri=https%3A//lejournal.cnrs.fr/fboauth/connect%3Fdestination%3Dnode%252F1825&display=popup&scope=email%2Cuser_birthday"><span class="facebook-icon"></span>Se connecter avec Facebook</a> </div> </div> <div id='replace_preview_comment_form_node_infographie_18251239' class='ideal-comment-preview-area comment-preview'><div id="edit-comment-preview--4" class="form-item form-type-item"> </div> </div></div></form> </div> <div class="links"><ul class="links inline"><li class="comment_forbidden first last"><span><a href="/user/login?destination=node/1825%23comment-form">Connectez-vous</a> ou <a href="/user/register?destination=node/1825%23comment-form">inscrivez-vous</a> pour publier un commentaire</span></li> </ul></div> </article><!-- /comment --><a id="comment-1665"></a> <article class="comment odd"> <header> <h3 class="title"><a href="/comment/1665#comment-1665" class="permalink" rel="bookmark">Bonjour. Après tout ce que j</a></h3> <span class="submitted"><span class="username">Bruno Gente</span> le 4 Octobre 2020 à 02h20</span> </header> <div class="content"> Bonjour. Après tout ce que j'ai lu sur l'origine de la vie, une question me vient à propos de l'hypothétique soupe organique originelle. En fait, il n'y a pas meilleure soupe de ce type que celle que l'on trouve dans cytoplasme de nos cellules. Tous les ingrédients y sont réunis. Les molécules organiques qui s'y trouvent se combinent-elles spontanément, par hasard ? Les protéines s'y assemblent-elles d'elles-mêmes, si ce n'est sur l'ordre d'un ARN et l'intervention si complexe d'un ribosome ? Heureusement pour nous, je crois pouvoir dire : Non. Alors, comment tout cela aurait-il pu se faire dans un volume d'eau dont la concentration en molécules organiques aurait été infiniment plus faible et sachant que l'eau favorise la dépolymérisation ?<form class="comment-form" action="/infographies/les-origines-de-la-vie" method="post" id="comment-form--5" accept-charset="UTF-8"><div><div class="form-item form-type-textfield form-item-name"> <label for="edit-name--6">Votre nom </label> <input type="text" id="edit-name--6" name="name" value="" size="30" maxlength="60" class="form-text" /> </div> <div class="field-type-text-long field-name-comment-body field-widget-text-textarea form-wrapper" id="edit-comment-body--5"><div id="comment-body-add-more-wrapper--5"><div class="form-item form-type-textarea form-item-comment-body-und-0-value"> <label for="edit-comment-body-und-0-value--5">Comment <span class="form-required" title="Ce champ est requis.">*</span></label> <div class="form-textarea-wrapper resizable"><textarea class="text-full 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