{"id":4091,"date":"2025-10-29T15:33:12","date_gmt":"2025-10-29T18:33:12","guid":{"rendered":"https:\/\/overticeportal.com.br\/?p=4091"},"modified":"2025-10-29T15:33:14","modified_gmt":"2025-10-29T18:33:14","slug":"visitante-interestelar-3i-atlas-passou-pelo-sol-e-agora","status":"publish","type":"post","link":"https:\/\/portalam9.com.br\/?p=4091","title":{"rendered":"Visitante interestelar 3I\/ATLAS passou pelo Sol \u2013 e agora?"},"content":{"rendered":"\n

Tempo de leitura: 3 minutos <\/em><\/p>\n\n\n\n

Conforme noticiado pelo Olhar Digital, nesta quarta-feira (29), o cometa 3I\/ATLAS est\u00e1 a 1,36 unidade astron\u00f4mica (UA) do Sol, o que equivale a cerca de 204 milh\u00f5es de km de dist\u00e2ncia. Chamado peri\u00e9lio, esse \u00e9 o ponto mais pr\u00f3ximo da estrela no trajeto do visitante interestelar pelo Sistema Solar.<\/p>\n\n\n\n

Descoberto\u00a0em julho deste ano, o 3I\/ATLAS \u2013 terceiro grande \u201cturista\u201d vindo de fora do Sistema Solar \u2013 \u00e9 um objeto de alt\u00edssima prioridade cient\u00edfica. Vindo de uma estrela desconhecida, o cometa carrega em sua composi\u00e7\u00e3o qu\u00edmica pistas sobre a forma\u00e7\u00e3o de mundos em cantos inexplorados da Via L\u00e1ctea.\u00a0<\/p>\n\n\n\n

\"\"
Astr\u00f4nomo amador encontrou o cometa interestelar 3I\/ATLAS a caminho do Sol em imagens di\u00e1rias do coron\u00f3grafo CCOR-1, do sat\u00e9lite GOES-19. Cr\u00e9dito: CCOR-1\/GOES-19\/NOAA Processamento: Worachate Boonplod<\/figcaption><\/figure>\n\n\n\n

De acordo com uma plataforma que divulga dados<\/a> do Laborat\u00f3rio de Propuls\u00e3o a Jato (JPL), da NASA, o cometa atingiu o peri\u00e9lio especificamente \u00e0s 8h47 (hor\u00e1rio de Bras\u00edlia). Nesse momento, ele recebe a maior quantidade de luz e calor solar. Com isso, parte do gelo que comp\u00f5e o n\u00facleo come\u00e7a a sublimar (passa do estado s\u00f3lido diretamente para o gasoso), criando a t\u00edpica cauda brilhante e a nuvem difusa ao redor do n\u00facleo chamada coma.<\/p>\n\n\n\n

Cometa pode se desintegrar perto do Sol?<\/strong><\/h2>\n\n\n\n

O 3I\/ATLAS n\u00e3o chegou t\u00e3o perto do Sol quanto, por exemplo, Merc\u00fario, que orbita o astro a apenas 0,39 UA (ou 58,3 milh\u00f5es de km). Isso significa que ele n\u00e3o corre risco de ser totalmente destru\u00eddo, embora possam ocorrer pequenas fraturas em regi\u00f5es mais fr\u00e1geis do n\u00facleo. A maior expectativa dos astr\u00f4nomos \u00e9 descobrir como o corpo reagiu ao calor e quanta atividade ele apresentar\u00e1 a partir de ent\u00e3o.<\/p>\n\n\n\n

Segundo o site Live Science<\/em><\/a>, a chance de fragmenta\u00e7\u00e3o \u00e9 considerada baixa, e o n\u00facleo deve continuar praticamente intacto. Isso permitir\u00e1 que os cientistas acompanhem a evolu\u00e7\u00e3o do cometa por v\u00e1rias semanas ap\u00f3s o peri\u00e9lio, coletando dados valiosos sobre sua estrutura e comportamento.<\/p>\n\n\n\n

\"\"
Anima\u00e7\u00e3o simula trajet\u00f3ria do cometa interestelar 3I\/ATLAS pelo Sistema Solar. Cr\u00e9dito: TheSkyLive.com<\/figcaption><\/figure>\n\n\n\n

Depois desse ponto, o \u201cforasteiro\u201d come\u00e7ar\u00e1 lentamente a se afastar do Sol. De acordo com o guia de observa\u00e7\u00e3o InTheSky.org<\/em><\/a>, o 3I\/ATLAS poder\u00e1 ser visto novamente a partir de 3 de novembro, pouco antes do amanhecer, a 9\u00ba acima do horizonte leste. At\u00e9 17 de novembro ele poder\u00e1 ser visto com telesc\u00f3pios na Constela\u00e7\u00e3o de Virgem, cerca de tr\u00eas graus mais alto e em torno de 10 minutos mais cedo a cada madrugada. Depois disso, ele desfila pela Constela\u00e7\u00e3o do Le\u00e3o.<\/p>\n\n\n\n

\"\"
O trajeto do cometa 3I\/ATLAS enquanto se afasta do Sol. Cr\u00e9dito: Imagem gerada por IA\/Gemini<\/figcaption><\/figure>\n\n\n\n

Em 2026, o cometa seguir\u00e1 seu caminho em dire\u00e7\u00e3o \u00e0 constela\u00e7\u00e3o de G\u00eameos, desaparecendo novamente no espa\u00e7o interestelar. Antes dele, os outros objetos desse tipo detectados foram o asteroide 1I\/\u2018Oumuamua (2017) e o cometa 2I\/Borisov (2019).<\/p>\n\n\n\n

Como destaca o\u00a0Universe Today<\/em><\/a>, a descoberta precoce do 3I\/ATLAS, ainda a 4,5 UA do Sol (cerca de 675 milh\u00f5es de km), mostra como a capacidade de detectar visitantes interestelares est\u00e1 avan\u00e7ando. Com a\u00a0recente entrada em opera\u00e7\u00e3o\u00a0do Telesc\u00f3pio Vera C. Rubin, instalado no Chile, espera-se que o n\u00famero dessas raras descobertas aumente consideravelmente, revelando novas pistas sobre o que existe al\u00e9m dos limites do Sistema Solar.<\/p>\n\n\n\n

Fonte: Olhar Digital \/ <\/strong>Imagem gerada por IA\/Gemini<\/em><\/p>\n\n\n\n

<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Tempo de leitura: 3 minutos Conforme noticiado pelo Olhar Digital, nesta quarta-feira (29), o cometa<\/p>\n","protected":false},"author":3,"featured_media":4092,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-4091","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-curiosidades-2"],"yoast_head":"\nVisitante interestelar 3I\/ATLAS passou pelo Sol \u2013 e agora? - 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=4091\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Visitante interestelar 3I\/ATLAS passou pelo Sol \u2013 e agora? - Portal Amazonas 9\" \/>\n<meta property=\"og:description\" content=\"Tempo de leitura: 3 minutos Conforme noticiado pelo Olhar Digital, nesta quarta-feira (29), o cometa\" \/>\n<meta property=\"og:url\" content=\"https:\/\/portalam9.com.br\/?p=4091\" \/>\n<meta property=\"og:site_name\" content=\"Portal Amazonas 9\" \/>\n<meta property=\"article:published_time\" content=\"2025-10-29T18:33:12+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-10-29T18:33:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/portalam9.com.br\/wp-content\/uploads\/2025\/10\/3IATLAS-Sol-perilio-1920x1080-1.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1080\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Reda\u00e7\u00e3o Portal AM9\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Reda\u00e7\u00e3o Portal AM9\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. tempo de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/portalam9.com.br\\\/?p=4091#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/portalam9.com.br\\\/?p=4091\"},\"author\":{\"name\":\"Reda\u00e7\u00e3o Portal AM9\",\"@id\":\"https:\\\/\\\/portalam9.com.br\\\/#\\\/schema\\\/person\\\/98ef830cc0fc3a08e33cb435efda505a\"},\"headline\":\"Visitante interestelar 3I\\\/ATLAS passou pelo Sol \u2013 e agora?\",\"datePublished\":\"2025-10-29T18:33:12+00:00\",\"dateModified\":\"2025-10-29T18:33:14+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/portalam9.com.br\\\/?p=4091\"},\"wordCount\":614,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/portalam9.com.br\\\/#\\\/schema\\\/person\\\/98ef830cc0fc3a08e33cb435efda505a\"},\"image\":{\"@id\":\"https:\\\/\\\/portalam9.com.br\\\/?p=4091#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/portalam9.com.br\\\/wp-content\\\/uploads\\\/2025\\\/10\\\/3IATLAS-Sol-perilio-1920x1080-1.jpeg\",\"articleSection\":[\"Curiosidades\"],\"inLanguage\":\"pt-BR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/portalam9.com.br\\\/?p=4091#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/portalam9.com.br\\\/?p=4091\",\"url\":\"https:\\\/\\\/portalam9.com.br\\\/?p=4091\",\"name\":\"Visitante interestelar 3I\\\/ATLAS passou pelo Sol \u2013 e agora? 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