{"id":53271,"date":"2024-01-13T18:27:28","date_gmt":"2024-01-13T17:27:28","guid":{"rendered":"https:\/\/sftarticles.wpenginepowered.com\/es\/?p=324659"},"modified":"2024-08-07T01:45:45","modified_gmt":"2024-08-07T05:45:45","slug":"a-nasa-nao-acredita-uma-galaxia-sem-estrelas","status":"publish","type":"post","link":"https:\/\/cms-articles.softonic.io\/br\/a-nasa-nao-acredita-uma-galaxia-sem-estrelas\/","title":{"rendered":"A NASA n\u00e3o acredita: cientistas descobrem uma gal\u00e1xia sem estrelas"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">O objeto vazio perturbador, chamado J0613+52, est\u00e1 a 270 milh\u00f5es de anos-luz de dist\u00e2ncia e, no m\u00ednimo, parece ser uma gal\u00e1xia de baixo brilho superficial (LSB). <\/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=\"Aplicativo da 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\">Aplicativo da NASA<\/span>\r\n        <a class=\"sc-card-program__button sc-card-program-internal\" href=\"https:\/\/nasa-app.softonic.com.br\/android\" target=\"_blank\" rel=\"noopener noreferrer\">Download<\/a>\r\n      <\/div>\r\n      <div class=\"sc-card-program__col-rating\">\r\n        <svg class=\"rating-score__content\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" version=\"1.1\" x=\"0\" y=\"0\" viewbox=\"0 0 50 50\" enable-background=\"new 0 0 50 50\" xml:space=\"preserve\"><path class=\"rating-score__background rating-score--good\" fill=\"none\" stroke-width=\"6\" stroke-miterlimit=\"10\" d=\"M40 40c8.3-8.3 8.3-21.7 0-30s-21.7-8.3-30 0 -8.3 21.7 0 30\"><\/path><path class=\"rating-score__value rating-score__value--0\" fill=\"none\" stroke-width=\"6\" stroke-dashoffset=\"0\" stroke-miterlimit=\"10\" d=\"M40 40c8.3-8.3 8.3-21.7 0-30s-21.7-8.3-30 0 -8.3 21.7 0 30\"><\/path><text class=\"rating-score__number\" content=\"\" text-anchor=\"middle\" transform=\"matrix(1 0 0 1 25 31.0837)\" data-auto=\"app-user-score\"><\/text><\/svg>\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=\"\" onerror=\"this.style.display='none'\">\r\n    <\/div>\r\n    <a class=\"sc-card-program__link track-link sc-card-program-internal\" href=\"https:\/\/nasa-app.softonic.com.br\/android\" target=\"_blank\" rel=\"noopener noreferrer\"><\/a>\r\n  <\/div>\r\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Como o nome indica, <strong>uma LSB \u00e9 muito menos brilhante do que outros objetos brilhantes que povoam o c\u00e9u noturno<\/strong> porque os gases que cont\u00e9m est\u00e3o t\u00e3o dispersos que formam poucas estrelas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Esta descoberta pode fornecer uma vis\u00e3o rara, possivelmente nunca antes vista, que desafia nossa compreens\u00e3o de como as estrelas e as gal\u00e1xias se formam.<\/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\">Astronomers Puzzled by Galaxy With No Stars <a href=\"https:\/\/t.co\/DID5HxSPDZ\">https:\/\/t.co\/DID5HxSPDZ<\/a><\/p>&mdash; Futurism (@futurism) <a href=\"https:\/\/twitter.com\/futurism\/status\/1746158138523287584?ref_src=twsrc%5Etfw\">January 13, 2024<\/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\">Uma descoberta desconcertante<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>No entanto, essa classifica\u00e7\u00e3o sustenta que uma gal\u00e1xia desse tipo teria pelo menos algumas estrelas<\/strong>, e J0613+52, aparentemente sem nenhuma, pode ser algo ainda mais raro e esquivo: uma gal\u00e1xia escura e primordial.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#8216;Este poderia ser a nossa primeira descoberta de uma gal\u00e1xia pr\u00f3xima formada por g\u00e1s primordial&#8217;, <a href=\"https:\/\/bigthink.com\/starts-with-a-bang\/dark-primordial-galaxy\/\" target=\"_blank\" rel=\"noopener nofollow\" title=\"afirma Karen O'Neil\">afirma Karen O&#8217;Neil<\/a>, cientista do Observat\u00f3rio de Green Bank, em um comunicado sobre a pesquisa.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>O&#8217;Neil e sua equipe descobriram a gal\u00e1xia gra\u00e7as a um erro fortuito cometido enquanto estudavam as LSB<\/strong>. Basicamente, eles perceberam que havia uma discrep\u00e2ncia nos dados entre dois telesc\u00f3pios que estavam utilizando, o que os levou a verificar duas vezes para onde estavam olhando.<\/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=\"Telescope Error Leads to a Discovery of a Mindblowing Galaxy J0613+52\" width=\"840\" height=\"473\" src=\"https:\/\/www.youtube.com\/embed\/HeMlpsypaes?start=23&#038;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\">&#8216;O [Telesc\u00f3pio de Green Bank] estava apontando acidentalmente para as coordenadas erradas e encontrou este objeto&#8217;, disse O&#8217;Neil.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>N\u00e3o apenas descobriram que a gal\u00e1xia carecia de estrelas apesar de ser rica em g\u00e1s <\/strong>&#8211; acreditam que cont\u00e9m entre mil e dois bilh\u00f5es de massas solares de hidrog\u00eanio -, <strong>mas tamb\u00e9m estava extremamente isolada.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#8216;Est\u00e1 muito distante de outras gal\u00e1xias para que elas possam contribuir para desencadear a forma\u00e7\u00e3o estelar atrav\u00e9s de algum encontro&#8217;, explicou O&#8217;Neil. &#8216;J0613+52 parece n\u00e3o estar perturbada e estar pouco desenvolvida&#8217;.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Essa \u00faltima parte, a &#8216;inalterada e subdesenvolvida&#8217;, \u00e9 fundamental. <strong>Sugere que, ao longo dos bilh\u00f5es de anos de sua exist\u00eancia, a gal\u00e1xia &#8216;escura&#8217; tem se mantido est\u00e1vel em um grau sem precedentes<\/strong>, sem intera\u00e7\u00f5es gravitacionais significativas que provoquem a aglomera\u00e7\u00e3o de g\u00e1s para formar estrelas, e sem gal\u00e1xias pr\u00f3ximas que interfiram em seu equil\u00edbrio quase perfeito.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Em outras palavras, \u00e9 um relic\u00e1rio incrivelmente preservado dos primeiros anos do cosmos, <strong>t\u00e3o perfeito que quase desafia a compreens\u00e3o.<\/strong><\/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=\"Aplicativo da 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\">Aplicativo da NASA<\/span>\r\n        <a class=\"sc-card-program__button sc-card-program-internal\" href=\"https:\/\/nasa-app.softonic.com.br\/android\" target=\"_blank\" rel=\"noopener noreferrer\">Download<\/a>\r\n      <\/div>\r\n      <div class=\"sc-card-program__col-rating\">\r\n        <svg class=\"rating-score__content\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" version=\"1.1\" x=\"0\" y=\"0\" viewbox=\"0 0 50 50\" enable-background=\"new 0 0 50 50\" xml:space=\"preserve\"><path class=\"rating-score__background rating-score--good\" fill=\"none\" stroke-width=\"6\" stroke-miterlimit=\"10\" d=\"M40 40c8.3-8.3 8.3-21.7 0-30s-21.7-8.3-30 0 -8.3 21.7 0 30\"><\/path><path class=\"rating-score__value rating-score__value--0\" fill=\"none\" stroke-width=\"6\" stroke-dashoffset=\"0\" stroke-miterlimit=\"10\" d=\"M40 40c8.3-8.3 8.3-21.7 0-30s-21.7-8.3-30 0 -8.3 21.7 0 30\"><\/path><text class=\"rating-score__number\" content=\"\" text-anchor=\"middle\" transform=\"matrix(1 0 0 1 25 31.0837)\" data-auto=\"app-user-score\"><\/text><\/svg>\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=\"\" onerror=\"this.style.display='none'\">\r\n    <\/div>\r\n    <a class=\"sc-card-program__link track-link sc-card-program-internal\" href=\"https:\/\/nasa-app.softonic.com.br\/android\" target=\"_blank\" rel=\"noopener noreferrer\"><\/a>\r\n  <\/div>\r\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>As observa\u00e7\u00f5es futuras ter\u00e3o que confirmar essas descobertas<\/strong>. Como aponta o Big Think, os astr\u00f4nomos buscar\u00e3o metais pesados que indiquem a presen\u00e7a de estrelas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Se n\u00e3o for encontrada nenhuma, ser\u00e1 uma prova contundente de que <strong>J0613+52 \u00e9 realmente a gal\u00e1xia escura que tem escapado da detec\u00e7\u00e3o por tanto tempo.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Alguns astr\u00f4nomos descobriram por acaso uma gal\u00e1xia inteira que parece ter muito g\u00e1s, mas nenhuma estrela vis\u00edvel. Como \u00e9 poss\u00edvel?<\/p>\n","protected":false},"author":9265,"featured_media":53272,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","wpcf-pageviews":1},"categories":[4082],"tags":[4332,4370],"usertag":[],"vertical":[],"content-category":[],"class_list":["post-53271","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-app-subdomain-redirectionnasa-app","tag-espacio"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/cms-articles.softonic.io\/br\/wp-json\/wp\/v2\/posts\/53271","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cms-articles.softonic.io\/br\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cms-articles.softonic.io\/br\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/br\/wp-json\/wp\/v2\/users\/9265"}],"replies":[{"embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/br\/wp-json\/wp\/v2\/comments?post=53271"}],"version-history":[{"count":0,"href":"https:\/\/cms-articles.softonic.io\/br\/wp-json\/wp\/v2\/posts\/53271\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/br\/wp-json\/wp\/v2\/media\/53272"}],"wp:attachment":[{"href":"https:\/\/cms-articles.softonic.io\/br\/wp-json\/wp\/v2\/media?parent=53271"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/br\/wp-json\/wp\/v2\/categories?post=53271"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/br\/wp-json\/wp\/v2\/tags?post=53271"},{"taxonomy":"usertag","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/br\/wp-json\/wp\/v2\/usertag?post=53271"},{"taxonomy":"vertical","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/br\/wp-json\/wp\/v2\/vertical?post=53271"},{"taxonomy":"content-category","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/br\/wp-json\/wp\/v2\/content-category?post=53271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}