{"id":136490,"date":"2023-12-19T18:23:08","date_gmt":"2023-12-19T17:23:08","guid":{"rendered":"https:\/\/sftarticles.wpenginepowered.com\/es\/?p=321630"},"modified":"2025-06-12T11:11:04","modified_gmt":"2025-06-12T10:11:04","slug":"le-soleil-va-projeter-contre-la-terre-un-telescope-de-la-nasa-qui-cherche-des-asteroides-dans-lespace","status":"publish","type":"post","link":"https:\/\/cms-articles.softonic.io\/fr\/le-soleil-va-projeter-contre-la-terre-un-telescope-de-la-nasa-qui-cherche-des-asteroides-dans-lespace\/","title":{"rendered":"Le Soleil va projeter contre la Terre un t\u00e9lescope de la NASA qui cherche des ast\u00e9ro\u00efdes dans l&#8217;espace"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Le t\u00e9lescope spatial <strong>NEOWISE se rapproche de sa disparition imminente en raison des \u00e9ruptions solaires<\/strong>, qui font que le t\u00e9lescope infrarouge s&#8217;\u00e9loigne progressivement de son orbite avant de br\u00fbler dans l&#8217;atmosph\u00e8re terrestre.<\/p>\n\n\n<div class=\"sc-card-program\">\r\n  <div class=\"sc-card-program__body\">\r\n    <div class=\"sc-card-program__row clearfix\">\r\n      <div class=\"sc-card-program__col-logo\">\r\n        <img decoding=\"async\" class=\"sc-card-program__img\" src=\"https:\/\/images.sftcdn.net\/images\/t_app-icon-s\/p\/2cddcc48-a4d6-11e6-88af-00163ec9f5fa\/3678680588\/nasa-app-logo\" alt=\"Application NASA\" width=\"100px\" height=\"100px\">\r\n      <\/div>\r\n      <div class=\"sc-card-program__col-title\">\r\n        <span class=\"sc-card-program__title\">Application NASA<\/span>\r\n        <a class=\"sc-card-program__button sc-card-program-internal\" href=\"https:\/\/nasa-app.fr.softonic.com\/android\" target=\"_self\" rel=\"noopener noreferrer\">T\u00c9L\u00c9CHARGER<\/a>\r\n      <\/div>\r\n      <div class=\"sc-card-program__col-rating\">\r\n        \r\n      <\/div>\r\n    <\/div>\r\n    <div class=\"sc-card-program__row\">\r\n      <span class=\"sc-card-program__description\"><\/span>\r\n    <\/div>\r\n    <div class=\"sc-card-program__row\">\r\n      <img decoding=\"async\" class=\"sc-card-program__bigpic\" src=\"\">\r\n    <\/div>\r\n    <a class=\"sc-card-program__link track-link sc-card-program-internal\" href=\"https:\/\/nasa-app.fr.softonic.com\/android\" target=\"_self\" rel=\"noopener noreferrer\"><\/a>\r\n  <\/div>\r\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Le NEOWISE<\/strong> (Near-Earth Object Wide-field Infrared Survey Explorer) <strong>de la NASA sera hors service au d\u00e9but de 2025 <\/strong>en raison de l&#8217;augmentation de l&#8217;activit\u00e9 solaire, selon l&#8217;annonce de l&#8217;agence spatiale.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">On s&#8217;attend \u00e0 ce que l&#8217;orbite du t\u00e9lescope se r\u00e9duise progressivement avec le temps. <strong>Cela est d\u00fb au r\u00e9chauffement de l&#8217;atmosph\u00e8re terrestre par le Soleil, ce qui provoque son expansion<\/strong>. En cons\u00e9quence, les satellites en orbite subissent une augmentation de la r\u00e9sistance atmosph\u00e9rique, ce qui entra\u00eene une diminution de leur altitude.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-twitter wp-block-embed-twitter\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">All good things&#8230;<br>NEOWISE, NASA&#39;s prolific asteroid and comet-hunting infrared space telescope, is celebrating 10 years of service, but is also planning for the end of its mission. <a href=\"https:\/\/t.co\/E4qkrqkLWY\">https:\/\/t.co\/E4qkrqkLWY<\/a><\/p>&mdash; NASA Solar System (@NASASolarSystem) <a href=\"https:\/\/twitter.com\/NASASolarSystem\/status\/1735440450134347962?ref_src=twsrc%5Etfw\">December 14, 2023<\/a><\/blockquote><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Et la faute revient \u00e0 l&#8217;activit\u00e9 solaire<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Le Soleil se rapproche de son maximum solaire, une p\u00e9riode o\u00f9 les \u00e9ruptions solaires et les \u00e9jections de masse coronale explosives s&#8217;intensifient.<\/strong> Pendant cette p\u00e9riode du cycle solaire de 11 ans, les gaz atmosph\u00e9riques ralentiront le NEOWISE, le faisant descendre plus bas dans l&#8217;atmosph\u00e8re terrestre. En cons\u00e9quence, le t\u00e9lescope ne pourra pas maintenir son orbite autour de notre plan\u00e8te.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00ab Apr\u00e8s plusieurs ann\u00e9es de calme, le Soleil se r\u00e9veille \u00e0 nouveau \u00bb, a d\u00e9clar\u00e9 Joseph Masiero, chercheur principal adjoint de la mission NEOWISE. \u00ab Nous sommes \u00e0 la merci de l&#8217;activit\u00e9 solaire, et sans moyen de rester en orbite, NEOWISE recule lentement en spirale vers la Terre \u00bb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">NEOWISE avait jusqu&#8217;\u00e0 pr\u00e9sent \u00e9vit\u00e9 la col\u00e8re du Soleil au cours des 10 derni\u00e8res ann\u00e9es de sa mission r\u00e9activ\u00e9e. <strong>Le t\u00e9lescope spatial a \u00e9t\u00e9 lanc\u00e9 en 2009 dans le but de r\u00e9aliser une enqu\u00eate du ciel en lumi\u00e8re infrarouge<\/strong>, capturant des galaxies lointaines, des \u00e9toiles froides et des naines blanches en explosion avec une sensibilit\u00e9 beaucoup plus \u00e9lev\u00e9e que d&#8217;autres enqu\u00eates.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"NEOWISE: Revealing Changes in the Universe\" width=\"840\" height=\"473\" src=\"https:\/\/www.youtube.com\/embed\/qOVTqPvV6wY?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c0 l&#8217;\u00e9poque, il \u00e9tait simplement connu sous le nom de WISE (Wide-field Infrared Survey Explorer). <strong>Le t\u00e9lescope a cartographi\u00e9 le ciel deux fois avant de manquer de r\u00e9frig\u00e9rant cryog\u00e9nique<\/strong>, ce qui lui a permis d&#8217;observer les longueurs d&#8217;onde infrarouges sans que la chaleur du vaisseau lui-m\u00eame n&#8217;interf\u00e8re avec ses observations. Par la suite, WISE est entr\u00e9 en hibernation en f\u00e9vrier 2011.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Apr\u00e8s pr\u00e8s de trois ans \u00e0 flotter sans but, le t\u00e9lescope a re\u00e7u une seconde vie.<\/strong> En d\u00e9cembre 2013, la NASA a r\u00e9affect\u00e9 la mission \u00e0 l&#8217;observation d&#8217;objets proches de la Terre, contribuant ainsi \u00e0 prot\u00e9ger notre plan\u00e8te contre d&#8217;\u00e9ventuelles menaces.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pendant les 10 derni\u00e8res ann\u00e9es de service, <strong>NEOWISE a balay\u00e9 le ciel plus de 20 fois et a effectu\u00e9 1,45 million de mesures infrarouges sur plus de 44 000 objets du syst\u00e8me solaire<\/strong>, selon la NASA. Le t\u00e9lescope a observ\u00e9 plus de 3 000 objets proches de la Terre, dont 215 d\u00e9couverts par lui-m\u00eame, y compris une com\u00e8te \u00e0 longue p\u00e9riode portant le m\u00eame nom.<\/p>\n\n\n<div class=\"sc-card-program\">\r\n  <div class=\"sc-card-program__body\">\r\n    <div class=\"sc-card-program__row clearfix\">\r\n      <div class=\"sc-card-program__col-logo\">\r\n        <img decoding=\"async\" class=\"sc-card-program__img\" src=\"https:\/\/images.sftcdn.net\/images\/t_app-icon-s\/p\/2cddcc48-a4d6-11e6-88af-00163ec9f5fa\/3678680588\/nasa-app-logo\" alt=\"Application NASA\" width=\"100px\" height=\"100px\">\r\n      <\/div>\r\n      <div class=\"sc-card-program__col-title\">\r\n        <span class=\"sc-card-program__title\">Application NASA<\/span>\r\n        <a class=\"sc-card-program__button sc-card-program-internal\" href=\"https:\/\/nasa-app.fr.softonic.com\/android\" target=\"_self\" rel=\"noopener noreferrer\">T\u00c9L\u00c9CHARGER<\/a>\r\n      <\/div>\r\n      <div class=\"sc-card-program__col-rating\">\r\n        \r\n      <\/div>\r\n    <\/div>\r\n    <div class=\"sc-card-program__row\">\r\n      <span class=\"sc-card-program__description\"><\/span>\r\n    <\/div>\r\n    <div class=\"sc-card-program__row\">\r\n      <img decoding=\"async\" class=\"sc-card-program__bigpic\" src=\"\">\r\n    <\/div>\r\n    <a class=\"sc-card-program__link track-link sc-card-program-internal\" href=\"https:\/\/nasa-app.fr.softonic.com\/android\" target=\"_self\" rel=\"noopener noreferrer\"><\/a>\r\n  <\/div>\r\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u00eame apr\u00e8s sa disparition, les chercheurs pourront toujours compter sur les pr\u00e9cieuses donn\u00e9es collect\u00e9es par NEOWISE <\/strong>pour continuer \u00e0 faire de nouvelles d\u00e9couvertes.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Apr\u00e8s avoir d\u00e9couvert plus de 200 objets proches de la Terre ces dix derni\u00e8res ann\u00e9es, NEOWISE s&#8217;approche tristement de sa fin : il mourra br\u00fbl\u00e9 dans l&#8217;atmosph\u00e8re.<\/p>\n","protected":false},"author":9265,"featured_media":136491,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","wpcf-pageviews":7},"categories":[16761],"tags":[17024],"usertag":[],"vertical":[],"content-category":[],"class_list":["post-136490","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-app-subdomain-redirectionnasa-app"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/posts\/136490","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/users\/9265"}],"replies":[{"embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/comments?post=136490"}],"version-history":[{"count":1,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/posts\/136490\/revisions"}],"predecessor-version":[{"id":161848,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/posts\/136490\/revisions\/161848"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/media\/136491"}],"wp:attachment":[{"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/media?parent=136490"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/categories?post=136490"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/tags?post=136490"},{"taxonomy":"usertag","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/usertag?post=136490"},{"taxonomy":"vertical","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/vertical?post=136490"},{"taxonomy":"content-category","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/content-category?post=136490"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}