{"id":4861,"date":"2026-04-10T14:46:13","date_gmt":"2026-04-10T17:46:13","guid":{"rendered":"https:\/\/overticeportal.com.br\/?p=4861"},"modified":"2026-04-10T17:39:37","modified_gmt":"2026-04-10T20:39:37","slug":"artemis-reentra-hoje-em-chamas-na-terra-e-com-escudo-a-prova","status":"publish","type":"post","link":"https:\/\/www.portalam9.com.br\/?p=4861","title":{"rendered":"C\u00e1psula Orion retorna hoje \u00e0 Terra, em chamas, e com escudo \u00e0 prova"},"content":{"rendered":"\n

Tempo de leitura: 2 minutos<\/em><\/p>\n\n\n\n

A miss\u00e3o Artemis II entra na fase final nesta sexta-feira (10), com a reentrada da c\u00e1psula Orion na atmosfera terrestre \u2014 considerada a etapa mais cr\u00edtica de toda a viagem.<\/p>\n\n\n\n

Durante esse momento, a nave enfrenta temperaturas extremas causadas pelo atrito com a atmosfera, sendo protegida por um escudo t\u00e9rmico projetado para suportar o calor intenso.<\/p>\n\n\n\n

Antes da reentrada, a tripula\u00e7\u00e3o realiza uma s\u00e9rie de preparativos ao longo do dia. \u00c0s 14h50, come\u00e7a a configura\u00e7\u00e3o da cabine, seguida por uma corre\u00e7\u00e3o de trajet\u00f3ria \u00e0s 15h53, que ajusta o caminho de retorno \u00e0 Terra.<\/p>\n\n\n\n

A partir das 19h30, a Nasa inicia a cobertura ao vivo do retorno. \u00c0s 20h33, ocorre a separa\u00e7\u00e3o entre o m\u00f3dulo de tripula\u00e7\u00e3o e o m\u00f3dulo de servi\u00e7o da Orion \u2014 etapa essencial para a descida.\u00a0<\/p>\n\n\n\n

Poucos minutos depois, \u00e0s 20h37, a c\u00e1psula come\u00e7a a enfrentar o aquecimento intenso da reentrada. A chamada \u201cinterface de entrada\u201d, quando a nave entra nas camadas mais densas da atmosfera, est\u00e1 prevista para 20h53.<\/p>\n\n\n\n

O pouso na \u00e1gua deve ocorrer \u00e0s 21h07, no Oceano Pac\u00edfico, onde\u00a0equipes de resgate da Nasa\u00a0e do Departamento de Defesa dos Estados Unidos estar\u00e3o posicionadas para recuperar os astronautas.<\/p>\n\n\n\n

Ap\u00f3s a opera\u00e7\u00e3o, uma coletiva de imprensa est\u00e1 prevista para 23h30 no Centro Espacial Johnson, em Houston. A tripula\u00e7\u00e3o da Artemis II \u00e9 composta pelos astronautas Reid Wiseman, Victor Glover, Christina Koch e Jeremy Hansen.<\/p>\n\n\n\n

Falha no escudo<\/h2>\n\n\n\n

A principal preocupa\u00e7\u00e3o do retorno est\u00e1 relacionada ao escudo t\u00e9rmico, revestimento aplicado na parte inferior da espa\u00e7onave, respons\u00e1vel por proteger os astronautas de temperaturas extremas durante a descida.<\/p>\n\n\n\n

O componente \u00e9 semelhante ao utilizado na\u00a0miss\u00e3o Artemis I, que apresentou danos inesperados ap\u00f3s o retorno em 2022. Veja abaixo:<\/strong><\/p>\n\n\n\n

\"Ao
Ao t\u00e9rmino do voo de teste Artemis I, a espa\u00e7onave Orion recuperada foi transportada para o Centro Espacial Kennedy, onde seu escudo t\u00e9rmico foi removido e inspecionado \u2022 NASA<\/figcaption><\/figure>\n\n\n\n

Na ocasi\u00e3o, o problema levou a Nasa a abrir uma investiga\u00e7\u00e3o. \u201cEste \u00e9 um escudo t\u00e9rmico defeituoso. N\u00e3o h\u00e1 d\u00favida: este n\u00e3o \u00e9 o escudo t\u00e9rmico que a Nasa gostaria de fornecer aos seus astronautas\u201d, afirmou o ex-astronauta Danny Olivas, que integrou a equipe de revis\u00e3o independente.<\/p>\n\n\n\n

A c\u00e1psula Orion retornou da miss\u00e3o Artemis I com um escudo t\u00e9rmico repleto de buracos e rachaduras.<\/p>\n\n\n\n

\"As
As imagens mostram o escudo t\u00e9rmico ap\u00f3s a miss\u00e3o Artemis I, incluindo cavidades resultantes da perda de grandes partes do escudo t\u00e9rmico durante a reentrada \u2022 Nasa<\/figcaption><\/figure>\n\n\n\n

A reentrada da Artemis II ocorrer\u00e1 quando a Orion mergulha na atmosfera terrestre em alt\u00edssima velocidade \u2014 superior a 30 vezes a velocidade do som \u2014, exigindo funcionamento perfeito do escudo t\u00e9rmico para garantir a seguran\u00e7a da tripula\u00e7\u00e3o.<\/p>\n\n\n\n

O processo causa uma violenta compress\u00e3o das mol\u00e9culas de ar que pode aquecer a parte externa da espa\u00e7onave a mais de\u00a02.760 graus Celsius\u00a0(5.000 graus Fahrenheit).<\/p>\n\n\n\n

Foto: Nasa \/ <\/strong>Fonte: CNN Brasil <\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

C\u00e1psula Orion enfrenta etapa mais cr\u00edtica da miss\u00e3o antes de pouso no Pac\u00edfico<\/p>\n","protected":false},"author":3,"featured_media":4862,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[39],"class_list":["post-4861","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ultimas-noticias","tag-destaque"],"yoast_head":"\nC\u00e1psula Orion retorna hoje \u00e0 Terra, em chamas, e com escudo \u00e0 prova - Portal Amazonas 9<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/portalam9.com.br\/?p=4861\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u00e1psula Orion retorna hoje \u00e0 Terra, em chamas, e com escudo \u00e0 prova - 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