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<p>Au CERN, nous sondons la structure fondamentale de la matière qui compose tout ce qui nous entoure. Pour ce faire, nous utilisons les instruments scientifiques les plus grands et les plus complexes du monde.</p> <p class="cern-btn"><a href="/fr/about">En savoir plus</a></p> </div> </div> </div> <div class="col-xs-0 col-sm-0 col-md-8 col-lg-8 col-item-megamenu"> <div class="row"> <div class="col-xs-12 col-sm-12 col-md-4 col-lg-4 col-item-megamenu"> <ul class="cern-submenu"> <li> <p class="h2 cernmenu-level-0"> <a href="/fr/about/who-we-are" data-drupal-link-system-path="node/5898">Qui sommes-nous ?</a> </p> <ul class=""> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/fr/about/who-we-are/our-mission" data-drupal-link-system-path="node/5273">Nos missions</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/fr/about/who-we-are/our-governance" data-drupal-link-system-path="node/5277">Notre gouvernance</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/fr/about/who-we-are/our-governance/member-states" 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href="/fr/science/accelerators/large-hadron-collider">Grand collisionneur de hadrons</a></p> </li> <li> <p class="cernmenu-level-1 cernmenu-level-last "><a href="/fr/science/computing/birth-web">La naissance du web</a></p> </li> <li> <p class="cernmenu-level-1 cernmenu-level-last "><a href="/fr/science/physics/antimatter">Antimatière</a></p> </li> </ul> </div> </div> </div> <div class="col-xs-12 col-sm-12 col-md-4 col-lg-4 col-item-megamenu"> </div> </div> </div> <div class="close-cern-dropdown"></div> </div> </li> <li class="cern-dropdown"> <a class="dropdown-toggle"> Actualités </a> <div class="cern-dropdown-menu row"> <div class="col-xs-12 col-sm-12 col-md-6 col-lg-6 col-item-megamenu"> <div class="views-element-container form-group"> <div class="view view-cern-news-menu-featured view-id-cern_news_menu_featured view-display-id-block_1 js-view-dom-id-bc46c899b24f163f4ea9eef07457b948221987aab72c2e5ab7900981434ff104 cern-view-display-block cern-view-display-block_1 clearfix"> <div class="view-header"> <p>Actualités, opinions, annonces et articles à la une</p> </div> <div class="view-content clearfix"> <div class="views-row"> <div data-history-node-id="192017" id="preview-card" class="component-preview-cards box-pattern" style="background:url('/sites/default/files/styles/large/public/2025-03/FCC_pp-TUNNEL_STATIC-04-PX%20%282%29.png?itok=pivZ2hkc') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2025-03/FCC_pp-TUNNEL_STATIC-04-PX%20%282%29.png?itok=pivZ2hkc" class="component-preview-cards box-pattern"> <a class="box-link" target="" href="/fr/news/news/accelerators/cern-releases-report-feasibility-possible-future-circular-collider"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/fr/news/news/accelerators/cern-releases-report-feasibility-possible-future-circular-collider" hreflang="fr" title="Le CERN publie son rapport sur la faisabilité d’un éventuel Futur collisionneur circulaire"> <span> Le CERN publie son rapport sur la faisabilité... </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> Accelerators </div> <div class="preview-card__category" style="color:"> News </div> <div class="preview-card__date" style="color:"> <time datetime="2025-03-31T18:00:00Z">31 mars, 2025</time> </div> </div> </div> </div> </div> </div> <div class="views-row"> <div data-history-node-id="191995" id="preview-card--2" class="component-preview-cards box-pattern" style="background:url('/sites/default/files/styles/large/public/2025-03/202403-050_211.jpg?itok=GnriXUQ1') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2025-03/202403-050_211.jpg?itok=GnriXUQ1" class="component-preview-cards box-pattern"> <a class="box-link" target="" href="/fr/news/press-release/physics/new-piece-matter-antimatter-puzzle"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/fr/news/press-release/physics/new-piece-matter-antimatter-puzzle" hreflang="fr" title="Asymétrie matière-antimatière : une nouvelle pièce du puzzle dévoilée"> <span> Asymétrie matière-antimatière : une nouvelle ... </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> Physics </div> <div class="preview-card__category" style="color:"> Press release </div> <div class="preview-card__date" style="color:"> <time datetime="2025-03-25T16:00:00Z">25 mars, 2025</time> </div> </div> </div> </div> </div> </div> <div class="views-row"> <div data-history-node-id="191974" id="preview-card--3" class="component-preview-cards box-pattern" style="background:url('/sites/default/files/styles/large/public/2025-03/CollideCopenhagen_Grace_1920x1080_03.jpg?itok=2L7HtDl4') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2025-03/CollideCopenhagen_Grace_1920x1080_03.jpg?itok=2L7HtDl4" class="component-preview-cards box-pattern"> <a class="box-link" target="" href="/fr/news/news/cern/cern-announces-winner-third-collide-copenhagen-residency"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/fr/news/news/cern/cern-announces-winner-third-collide-copenhagen-residency" hreflang="fr" title="Le CERN annonce la lauréate du prix de résidence Collide Copenhagen"> <span> Le CERN annonce la lauréate du prix de réside... </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> At CERN </div> <div class="preview-card__category" style="color:"> News </div> <div class="preview-card__date" style="color:"> <time datetime="2025-03-18T13:00:00Z">18 mars, 2025</time> </div> </div> </div> </div> </div> </div> <div class="views-row"> <div data-history-node-id="191883" id="preview-card--4" class="component-preview-cards box-pattern" style="background:url('/sites/default/files/styles/large/public/2025-02/favero_cedric_10_1.jpg?itok=LOsewi62') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2025-02/favero_cedric_10_1.jpg?itok=LOsewi62" class="component-preview-cards box-pattern"> <a class="box-link" target="" href="/fr/news/press-release/cern/cern-invites-photographers-explore-colliders-future"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/fr/news/press-release/cern/cern-invites-photographers-explore-colliders-future" hreflang="fr" title="Le CERN invite les photographes à découvrir les collisionneurs du futur"> <span> Le CERN invite les photographes à découvrir l... </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> At CERN </div> <div class="preview-card__category" style="color:"> Press release </div> <div class="preview-card__date" style="color:"> <time datetime="2025-02-26T10:02:24Z">26 février, 2025</time> </div> </div> </div> </div> </div> </div> </div> <div class="view-footer"> <p class="cern-btn"><a 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