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{"id":1787,"date":"2025-10-23T10:52:16","date_gmt":"2025-10-23T13:52:16","guid":{"rendered":"https:\/\/spacebetween.com.br\/?p=1787"},"modified":"2026-01-12T09:28:32","modified_gmt":"2026-01-12T12:28:32","slug":"3i-atlas-um-resonante-viajante-interestelar","status":"publish","type":"post","link":"https:\/\/spacebetween.com.br\/index.php\/2025\/10\/23\/3i-atlas-um-resonante-viajante-interestelar\/","title":{"rendered":"3I\/ATLAS: Um Resonante Viajante Interestelar (\u00daltimas Atualiza\u00e7\u00f5es &#8211; 11\/12)"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">Descoberta e Contexto Inicial<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Detectado em <strong>1 de julho de 2025<\/strong> pelo <strong>ATLAS (Asteroid Terrestrial\u2011impact Last Alert System)<\/strong> no Chile, quando estava a cerca de <strong>4,5\u202fAU (\u2248670 milh\u00f5es de km)<\/strong> do Sol <a href=\"https:\/\/science.nasa.gov\/blogs\/planetary-defense\/2025\/07\/02\/nasa-discovers-interstellar-comet-moving-through-solar-system\/?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">NSF &#8211; National Science Foundation+15NASA Science+15Medium+15<\/a>.<br><\/li>\n\n\n\n<li>Identificado como o <strong>terceiro objeto interestelar<\/strong> confirmado, ap\u00f3s 1I\/\u02bbOumuamua (2017) e 2I\/Borisov (2019) <a href=\"https:\/\/en.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">New York Post+8Wikipedia+8Wikip\u00e9dia+8<\/a>.<br><\/li>\n\n\n\n<li>Observa\u00e7\u00f5es pr\u00e9vias (precoveries) de maio e junho de 2025 foram recuperadas por redes como ZTF, ATLAS e observat\u00f3rios independentes, refor\u00e7ando sua trajet\u00f3ria hiperb\u00f3lica <a href=\"https:\/\/en.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">SETI Institute+2Wikipedia+2Wikip\u00e9dia+2<\/a>.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Orbita, Din\u00e2mica e Origem Estelar<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u00d3rbita fortemente hiperb\u00f3lica com <strong>excentricidade ~6,08\u20136,30 \u00b1 0,15<\/strong>, a mais alta registrada entre objetos interestelares <a href=\"https:\/\/arxiv.org\/abs\/2507.05252?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">The Sun+5arXiv+5Wikip\u00e9dia+5<\/a>.<br><\/li>\n\n\n\n<li>Velocidade de escape interestelar (<strong>v\u221e<\/strong>) de ~57\u201358\u202fkm\/s; velocidade no peri\u00e9lio estimada em <strong>~68\u202fkm\/s<\/strong> (~245.000\u202fkm\/h) <a href=\"https:\/\/en.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Wikipedia+1Wikip\u00e9dia+1<\/a>.<br><\/li>\n\n\n\n<li>Inclina\u00e7\u00e3o orbital de ~175\u00b0 (retrogrado, ~5\u00b0 em rela\u00e7\u00e3o ao plano ecl\u00edptico), com origem prov\u00e1vel no <strong>disco grosso da Via L\u00e1ctea<\/strong>, sugerindo forma\u00e7\u00e3o em regi\u00f5es estelares antigas <a href=\"https:\/\/en.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Wikipedia<\/a>.<br><\/li>\n\n\n\n<li>Simula\u00e7\u00f5es com dados Gaia DR3 indicam analogias cinem\u00e1ticas com estrelas do disco fino e met\u00e1licas apenas ligeiramente sub-solares, refor\u00e7ando a hip\u00f3tese de um sistema de origem remoto e antigo <a href=\"https:\/\/arxiv.org\/abs\/2507.12922?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv<\/a>.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-dominant-color=\"070706\" data-has-transparency=\"false\" style=\"--dominant-color: #070706;\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9sw9w-1024x576.avif\" alt=\"\" class=\"wp-image-1795 not-transparent\" srcset=\"https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9sw9w-1024x576.avif 1024w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9sw9w-300x169.avif 300w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9sw9w-768x432.avif 768w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9sw9w-770x433.avif 770w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9sw9w.avif 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Caracter\u00edsticas F\u00edsicas e Atividade Comet\u00e1ria<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Os primeiros telesc\u00f3pios (CFHT, Lowell, Deep Random Survey) detectaram coma difusa e uma cauda de ~3\u2033 poucas horas ap\u00f3s a descoberta <a href=\"https:\/\/en.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Wikipedia+1Space+1<\/a>.<\/li>\n\n\n\n<li>Espectroscopia vis\u00edvel e infravermelha (Gemini, IRTF) revelou gr\u00e3os de <strong>gelo de \u00e1gua e silicatos<\/strong>; reflexividade avermelhada compat\u00edvel com cometas interestelares anteriores <a href=\"https:\/\/arxiv.org\/abs\/2507.05252?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">YouTube+14arXiv+14Wikip\u00e9dia+14<\/a>.<br><\/li>\n\n\n\n<li>Espectro vis\u00edvel obtido com o Gran Telescopio Canarias e Two\u2011meter Twin Telescope mostrou inclina\u00e7\u00e3o espectral de 18,3\u202f%\/1000\u202f\u00c5 (mais avermelhada que Bor\u00ed\u00adsov e \u2018Oumuamua), semelhante a objetos transnetunianos <a href=\"https:\/\/arxiv.org\/abs\/2507.12922?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Space+4arXiv+4Wikipedia+4<\/a>.<br><\/li>\n\n\n\n<li>Per\u00edodo de rota\u00e7\u00e3o estimado em <strong>~16,79\u202fh<\/strong>, com varia\u00e7\u00e3o de brilho inferior a 0,2 mag \u2014 possivelmente mascarado pela coma espessa <a href=\"https:\/\/arxiv.org\/abs\/2507.12922?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv<\/a>.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Tamanho e Brilho<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Estudos do Vera C. Rubin Observatory indicam um di\u00e2metro estimado de <strong>\u224811,2\u202fkm (\u22487 milhas)<\/strong>, tornando-o o <strong>maior ISO j\u00e1 registrado<\/strong> <a href=\"https:\/\/www.livescience.com\/space\/comets\/3i-atlas-is-7-miles-wide-the-largest-interstellar-object-ever-seen-new-photos-from-vera-c-rubin-observatory-reveal?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Live Science+2Live Science+2Wikipedia+2<\/a>.<br><\/li>\n\n\n\n<li>Poderia atingir at\u00e9 ~24\u202fkm de di\u00e2metro se tudo fosse n\u00facleo, mas coma ativa sugere n\u00facleo menor (possivelmente ~10\u202fkm ou mais conservadoramente ~5\u201312\u202fkm) <a href=\"https:\/\/pt.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Wikip\u00e9dia<\/a>.<br><\/li>\n\n\n\n<li>Magnitude aparente m\u00e1xima estimada em <strong>~11,5<\/strong>, fora do alcance de bin\u00f3culos comuns, observ\u00e1vel apenas por telesc\u00f3pios profissionais ou de m\u00e9dio porte <a href=\"https:\/\/en.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Wikipedia<\/a>.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-cover has-custom-content-position is-position-bottom-left\"><img data-dominant-color=\"525352\" data-has-transparency=\"false\" style=\"--dominant-color: #525352;\" decoding=\"async\" width=\"1024\" height=\"576\" class=\"wp-block-cover__image-background wp-image-1790 not-transparent\" alt=\"\" src=\"https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/unnamed-file-1024x576.avif\" data-object-fit=\"cover\" srcset=\"https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/unnamed-file-1024x576.avif 1024w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/unnamed-file-300x169.avif 300w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/unnamed-file-768x432.avif 768w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/unnamed-file-770x433.avif 770w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/unnamed-file.avif 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-20 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<p class=\"has-text-align-center has-white-color has-text-color has-link-color has-small-font-size wp-elements-405110552f3da23611da43a5e5943972\">3I\/ATLAS captured by Unistellar observer Vamshi Kesireddy (US)<\/p>\n<\/div><\/div>\n\n\n\n<p>O site <em>TheSkyLive.com<\/em> oferece um gr\u00e1fico da magnitude aparente do cometa ao longo do tempo, baseado nos dados JPL Horizons. \u00c9 uma \u00f3tima ferramenta visual para mostrar como o brilho evolui \u00e0 medida que o cometa se aproxima e se afasta do Sol. <a href=\"https:\/\/theskylive.com\/c2025n1-info?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">theskylive.com<\/a><\/p>\n\n\n\n<p>Complementarmente, observa\u00e7\u00f5es refletidas em artigos cient\u00edficos mostram uma curva de luz relativamente plana com amplitude inferior a 0,2\u202fmag e per\u00edodo de rota\u00e7\u00e3o estimado em torno de <strong>16,79 \u00b1 0,23\u202fh<\/strong>, conforme obtido pelo telesc\u00f3pio Gran Telescopio Canarias (GTC) ou similares. <a href=\"https:\/\/www.aanda.org\/articles\/aa\/pdf\/forth\/aa56439-25.pdf?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">aanda.org+1<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Eventos e Aproxima\u00e7\u00f5es Celestes Futuras<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Peri\u00e9lio em 29 de outubro de 2025, \u00e0s 11h33\u202fUT<\/strong>, a <strong>1,357\u202f\u00b1\u202f0,0005\u202fAU<\/strong> do Sol <a href=\"https:\/\/en.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Wikipedia+1Wikip\u00e9dia+1<\/a>.<\/li>\n\n\n\n<li>Aproxima\u00e7\u00f5es not\u00e1veis:\n<ul class=\"wp-block-list\">\n<li><strong>3 de outubro de 2025<\/strong>: passar\u00e1 a <strong>0,194\u202f\u00b1\u202f0,0008\u202fAU de Marte<\/strong> (poss\u00edvel observa\u00e7\u00e3o por orbitadores marcianos) <a href=\"https:\/\/en.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Wikipedia<\/a><a href=\"https:\/\/www.space.com\/astronomy\/comets\/new-interstellar-object-3i-atlas-everything-we-know-about-the-rare-cosmic-visitor?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Space<\/a>.<\/li>\n\n\n\n<li><strong>19 de dezembro de 2025<\/strong>: <strong>1,798\u202f\u00b1\u202f0,002\u202fAU da Terra<\/strong> <a href=\"https:\/\/en.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">NASA Science+15Wikipedia+15New York Post+15<\/a>.<\/li>\n\n\n\n<li><strong>16 de mar\u00e7o de 2026<\/strong>: <strong>0,357\u202f\u00b1\u202f0,004\u202fAU de J\u00fapiter<\/strong> <a href=\"https:\/\/en.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Wikipedia<\/a>.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Idade e Relev\u00e2ncia Cient\u00edfica<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Estimada com <strong>mais de 7 bilh\u00f5es de anos<\/strong> \u2014 cerca de 3 bilh\u00f5es de anos anterior ao nosso Sistema Solar; probabilidade de ~67\u202f% de ser mais antigo que o pr\u00f3prio sistema solar <a href=\"https:\/\/cadenaser.com\/nacional\/2025\/07\/11\/el-objeto-interestelar-3iatlas-podria-ser-el-cometa-mas-antiguo-jamas-observado-7000-millones-de-anos-cadena-ser\/?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Cadena SER<\/a><a href=\"https:\/\/pt.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Wikip\u00e9dia<\/a>.<br><\/li>\n\n\n\n<li>Data escala retr\u00f3grada e origem gal\u00e1ctica fazem dele um rel\u00edquia c\u00f3smica que potencialmente preserva qu\u00edmica e mineralogia primordiais.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-cover has-custom-content-position is-position-bottom-left\"><img data-dominant-color=\"191a19\" data-has-transparency=\"false\" style=\"--dominant-color: #191a19;\" decoding=\"async\" width=\"1024\" height=\"576\" class=\"wp-block-cover__image-background wp-image-1800 not-transparent\" alt=\"\" src=\"https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9snss-1024x576.avif\" data-object-fit=\"cover\" srcset=\"https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9snss-1024x576.avif 1024w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9snss-300x169.avif 300w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9snss-768x432.avif 768w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9snss-770x433.avif 770w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9snss.avif 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-20 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<p class=\"has-text-align-left has-white-color has-text-color has-link-color has-small-font-size wp-elements-a1ed0e697847cc43992ef0f83526f1af\">3I\/ATLAS \u00e9 um cometa interestelar que est\u00e1 atualmente viajando em dire\u00e7\u00e3o ao Sol em uma viagem s\u00f3 de ida pelo sistema solar.&nbsp;(Cr\u00e9dito da imagem: Darryl Seligman et al.)<\/p>\n<\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Observat\u00f3rios e Programas de Monitoramento<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Observado por instrumentos como <strong>Hubble (em 21 de julho de 2025)<\/strong> com imagens detalhadas da coma <a href=\"https:\/\/en.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Wikipedia<\/a>.<br><\/li>\n\n\n\n<li><strong>JWST<\/strong> agendado para espectroscopia infravermelha em <strong>agosto<\/strong> (pr\u00e9-peri\u00e9lio) e <strong>dezembro de 2025<\/strong> (p\u00f3s-peri\u00e9lio), visando detectar \u00e1gua, CO, CO\u2082 e am\u00f4nia <a href=\"https:\/\/en.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Wikipedia<\/a>.<br><\/li>\n\n\n\n<li><strong>Rubin Observatory\/LSST<\/strong> capturou imagens entre 21 de junho e 3 de julho no per\u00edodo de valida\u00e7\u00e3o; se estivesse em opera\u00e7\u00e3o plena, teria sido capaz de descobrir 3I\/ATLAS antes do ATLAS pr\u00f3prio <a href=\"https:\/\/en.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">academic.oup.com+15Wikipedia+15Live Science+15<\/a>.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Debates e Teorias Controversas<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>O astrof\u00edsico <strong>Avi Loeb<\/strong>, junto com Hibberd e Crowl, publicou uma hip\u00f3tese n\u00e3o-peer-reviewed sugerindo que 3I\/ATLAS poderia ser uma <strong>sonda alien\u00edgena possivelmente hostil<\/strong>, baseada em sua trajet\u00f3ria alinhada com planetas (prov\u00e1vel chance aleat\u00f3ria de apenas ~0,005\u202f%) e comportamento estrat\u00e9gico ao passar oculto do Sol durante o peri\u00e9lio <a href=\"https:\/\/www.chron.com\/news\/space\/article\/interstellar-object-alien-comet-20780216.php?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">The Sun+4Chron+4New York Post+4<\/a>.<br><\/li>\n\n\n\n<li>A maioria dos astr\u00f4nomos \u2014 incluindo <strong>Chris Lintott<\/strong>, <strong>Samantha Lawler<\/strong>, <strong>comentadores da MSU e ESA<\/strong> \u2014 rejeita a hip\u00f3tese como especulativa e sem fundamento observacional concreto <a href=\"https:\/\/cadenaser.com\/nacional\/2025\/07\/11\/el-objeto-interestelar-3iatlas-podria-ser-el-cometa-mas-antiguo-jamas-observado-7000-millones-de-anos-cadena-ser\/?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Cadena SER+1New York Post+1<\/a>.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Tabelas Resumo Avan\u00e7adas<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table class=\"has-white-color has-black-background-color has-text-color has-background has-link-color has-fixed-layout\"><tbody><tr><td><strong>Designa\u00e7\u00e3o oficial<\/strong><\/td><td>3I\/ATLAS = C\/2025\u202fN1 (ATLAS)<\/td><\/tr><tr><td><strong>Data descoberta<\/strong><\/td><td>1 de julho de 2025 (observa\u00e7\u00e3o inicial)<\/td><\/tr><tr><td><strong>Precovery<\/strong><\/td><td>Imagens desde 21 de maio at\u00e9 29 de junho<\/td><\/tr><tr><td><strong>Excentricidade (e)<\/strong><\/td><td>~6,08\u20136,30 \u00b1\u202f0,15<\/td><\/tr><tr><td><strong>Velocidade v\u221e<\/strong><\/td><td>~57\u201358\u202fkm\/s<\/td><\/tr><tr><td><strong>Velocidade no peri\u00e9lio<\/strong><\/td><td>~68\u202fkm\/s<\/td><\/tr><tr><td><strong>Inclina\u00e7\u00e3o orbital<\/strong><\/td><td>~175\u00b0 retrogrado, ~5\u00b0 ao ecl\u00edptico<\/td><\/tr><tr><td><strong>N\u00facleo estimado<\/strong><\/td><td>\u227224\u202fkm; n\u00facleo ativo provavelmente ~5\u201312\u202fkm<\/td><\/tr><tr><td><strong>Espectro<\/strong><\/td><td>Vermelho acentuado, ~18\u202f%\/1000\u202f\u00c5<\/td><\/tr><tr><td><strong>Rota\u00e7\u00e3o<\/strong><\/td><td>~16,8\u202fh, varia\u00e7\u00e3o \u22720,2\u202fmag<\/td><\/tr><tr><td><strong>Atividade comet\u00e1ria<\/strong><\/td><td>Coma e cauda vis\u00edveis desde in\u00edcio de julho<\/td><\/tr><tr><td><strong>Pr\u00f3ximos momentos chave<\/strong><\/td><td>3\u2011nov: Marte 0,194\u202fAU; 29\u2011out: peri\u00e9lio 1,357\u202fAU; 19\u2011dez: Terra 1,798\u202fAU; 16\u2011mar\/26: J\u00fapiter 0,357\u202fAU<\/td><\/tr><tr><td><strong>Idade estimada<\/strong><\/td><td>\u22737 bilh\u00f5es de anos<\/td><\/tr><tr><td><strong>Hip\u00f3tese alien\u00edgena<\/strong><\/td><td>Proposi\u00e7\u00e3o n\u00e3o peer-reviewed; maioria cient\u00edfica rejeita<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Por que 3I\/ATLAS marca um divisor de \u00e1guas?<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Maior ISO j\u00e1 detectado<\/strong>, com n\u00facleo possivelmente maior que 2I\/Borisov e muita atividade comet\u00e1ria.<br><\/li>\n\n\n\n<li><strong>Registro espetacular da forma\u00e7\u00e3o estelar antiga<\/strong>, com elementos qu\u00edmicos preservados.<br><\/li>\n\n\n\n<li><strong>Laborat\u00f3rio natural interestelar<\/strong>: composi\u00e7\u00e3o, din\u00e2mica e espectroscopia multifrequencial que ajudam a tra\u00e7ar origem e trajet\u00f3ria.<br><\/li>\n\n\n\n<li><strong>Impulsiona a ci\u00eancia de detec\u00e7\u00e3o<\/strong> \u2014 refor\u00e7a proje\u00e7\u00f5es do LSST sobre centenas de futuros ISOs.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-cover has-custom-content-position is-position-bottom-left\"><img data-dominant-color=\"171917\" data-has-transparency=\"false\" style=\"--dominant-color: #171917;\" decoding=\"async\" width=\"1024\" height=\"576\" class=\"wp-block-cover__image-background wp-image-1886 not-transparent\" alt=\"\" src=\"https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/10\/img-spacebetween-dwj2w12-1024x576.avif\" data-object-fit=\"cover\" srcset=\"https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/10\/img-spacebetween-dwj2w12-1024x576.avif 1024w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/10\/img-spacebetween-dwj2w12-300x169.avif 300w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/10\/img-spacebetween-dwj2w12-768x432.avif 768w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/10\/img-spacebetween-dwj2w12-770x433.avif 770w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/10\/img-spacebetween-dwj2w12.avif 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-20 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<p class=\"has-text-align-center has-white-color has-text-color has-link-color has-small-font-size wp-elements-d8cc3b26e8bab519bb4eaa13cb697c0e\">Cr\u00e9dito: International Gemini Observatory<\/p>\n<\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Expectativas futuras e pr\u00f3ximos passos cient\u00edficos<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>O <strong>Hubble<\/strong> continuar\u00e1 monitorando em UV, sobretudo ap\u00f3s o peri\u00e9lio, buscando composi\u00e7\u00f5es de enxofre e oxig\u00eanio.<br><\/li>\n\n\n\n<li>O <strong>JWST<\/strong> refor\u00e7ar\u00e1 a espectroscopia infravermelha em agosto e dezembro, visando compostos cruciais como CO\u2082 e am\u00f4nia.<br><\/li>\n\n\n\n<li>Observa\u00e7\u00f5es cont\u00ednuas de polarimetria e an\u00e1lise de part\u00edculas finas com telesc\u00f3pios terrestres (VLT, Keck etc.) devem refinar estimativas de massa, albedo e estrutura da coma.<br><\/li>\n\n\n\n<li>Simula\u00e7\u00f5es din\u00e2micas com dados Gaia v\u00e3o tentar identificar <em>sistemas hospedeiros poss\u00edveis<\/em>, incluindo a met\u00e1fora ou eventual origem estelar envolvida.<br><\/li>\n\n\n\n<li>A hip\u00f3tese de Loeb permanece como exerc\u00edcio te\u00f3rico, mas ser\u00e1 testada com busca de sinais de propuls\u00e3o artificial, emiss\u00e3o de r\u00e1dio ou varia\u00e7\u00f5es n\u00e3o gravitacionais na trajet\u00f3ria.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Conclus\u00e3o<\/strong><br><br><strong>3I\/ATLAS<\/strong> representa um dos maiores avan\u00e7os recentes na astronomia: um corpo interestelar gigante, ativo e extremamente antigo cruzando nosso sistema por poucos meses. Suas peculiaridades orbitais, composi\u00e7\u00e3o f\u00edsica e debates provocativos o colocam no centro das aten\u00e7\u00f5es cient\u00edficas globais. <\/p>\n\n\n\n<p>Ainda que a hip\u00f3tese de intelig\u00eancia alien\u00edgena seja praticamente descartada pela comunidade cient\u00edfica, ela estimula abordagens cr\u00edticas e multidisciplinares que enriquecem a metodologia astron\u00f4mica e levantam quest\u00f5es fundamentais sobre nossa compreens\u00e3o do universo.<\/p>\n\n\n\n<p><strong>O que esperamos ver nos pr\u00f3ximos dias, ou quem sabe meses, ser\u00e1 essa linda imagem abaixo.<\/strong><\/p>\n\n\n\n<div class=\"wp-block-cover has-custom-content-position is-position-bottom-left\"><img data-dominant-color=\"131b1c\" data-has-transparency=\"false\" style=\"--dominant-color: #131b1c;\" decoding=\"async\" width=\"1024\" height=\"576\" class=\"wp-block-cover__image-background wp-image-1794 not-transparent\" alt=\"\" src=\"https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9ddffewf-1-1024x576.avif\" data-object-fit=\"cover\" srcset=\"https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9ddffewf-1-1024x576.avif 1024w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9ddffewf-1-300x169.avif 300w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9ddffewf-1-768x432.avif 768w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9ddffewf-1-770x433.avif 770w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9ddffewf-1.avif 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-10 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<p class=\"has-text-align-center has-white-color has-text-color has-link-color has-small-font-size wp-elements-5eea43475cbc331a14ca1fa87b5f62cc\">3I\/Atlas n\u00e3o possui Coma e calda formada, caracter\u00edsticas b\u00e1sicas de Cometa. By Spacebetween<\/p>\n<\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>Aqui vai um resumo das <strong>\u00faltimas atualiza\u00e7\u00f5es<\/strong> conhecidas sobre o objeto interstelar 3I\/ATLAS \u2014 incr\u00edvel visitante de fora do nosso sistema solar \u2014 com o que a ci\u00eancia j\u00e1 descobriu at\u00e9 agora:<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Principais fatos atualizados<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>3I\/ATLAS foi descoberto em <strong>1 de julho de 2025<\/strong> pelo sistema Asteroid Terrestrial\u2011impact Last Alert System (ATLAS) no Chile. <a href=\"https:\/\/en.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Ci\u00eancia da NASA+3Wikipedia+3Ci\u00eancia da NASA+3<\/a><br><\/li>\n\n\n\n<li>Confirmado como objeto interestelar (designa\u00e7\u00e3o \u201c3I\u201d) \u2014 ou seja, n\u00e3o est\u00e1 ligado gravitacionalmente ao Sol, vindo de outro sistema estelar. <a href=\"https:\/\/en.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Wikipedia+1<\/a><br><\/li>\n\n\n\n<li>Trajet\u00f3ria: a \u00f3rbita \u00e9 hiperb\u00f3lica \u2014 ele vai passar, mas n\u00e3o ficar\u00e1 preso no Sistema Solar. <a href=\"https:\/\/en.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Wikipedia+1<\/a><br><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Observa\u00e7\u00f5es avan\u00e7adas:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Atividade comet\u00e1ria: o objeto possui coma (nuvem de poeira\/g\u00e1s) e j\u00e1 est\u00e1 formando uma cauda \u2014 por exemplo, imagens de 27 agosto de 2025 mostraram uma cauda vis\u00edvel. <a href=\"https:\/\/earthsky.org\/todays-image\/3i-atlas-interstellar-comet-shows-comet-tail-in-new-image\/?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">TerraC\u00e9u+2Sky at Night Magazine+2<\/a><br><\/li>\n\n\n\n<li>Altera\u00e7\u00e3o de apar\u00eancia: foi relatado que o objeto mudou de um tom mais avermelhado para um tom esverdeado. <a href=\"https:\/\/avi-loeb.medium.com\/3i-atlas-is-turning-green-c8a4fd003abc?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Medium+1<\/a><br><\/li>\n\n\n\n<li>Visibilidade: O 3I\/ATLAS permanecer\u00e1 observ\u00e1vel de telesc\u00f3pios na Terra at\u00e9 cerca de setembro de 2025. Depois disso, ficar\u00e1 muito pr\u00f3ximo ao Sol no c\u00e9u e ficar\u00e1 invis\u00edvel por um per\u00edodo. Ele dever\u00e1 reaparecer (visualmente) por tr\u00e1s do Sol por volta de dezembro de 2025. <a href=\"https:\/\/science.nasa.gov\/solar-system\/comets\/3i-atlas\/?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Ci\u00eancia da NASA+1<\/a><br><\/li>\n\n\n\n<li>Tamanho estimado: O n\u00facleo est\u00e1 estimado em alguns quil\u00f4metros de di\u00e2metro \u2014 ainda h\u00e1 incerteza, mas o objeto \u00e9 relativamente grande para um visitante interestelar. <a href=\"https:\/\/avi-loeb.medium.com\/what-do-we-know-so-far-about-3i-atlas-1e862233836c?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Medium+1<\/a><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-dominant-color=\"221c34\" data-has-transparency=\"false\" style=\"--dominant-color: #221c34;\" decoding=\"async\" width=\"1024\" height=\"337\" src=\"https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/10\/Webb_observations_of_interstellar_comet_3I_ATLAS-1024x337.avif\" alt=\"\" class=\"wp-image-1888 not-transparent\" srcset=\"https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/10\/Webb_observations_of_interstellar_comet_3I_ATLAS-1024x337.avif 1024w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/10\/Webb_observations_of_interstellar_comet_3I_ATLAS-300x99.avif 300w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/10\/Webb_observations_of_interstellar_comet_3I_ATLAS-768x253.avif 768w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/10\/Webb_observations_of_interstellar_comet_3I_ATLAS-1536x506.avif 1536w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/10\/Webb_observations_of_interstellar_comet_3I_ATLAS-2048x675.avif 2048w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/10\/Webb_observations_of_interstellar_comet_3I_ATLAS-770x254.avif 770w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/10\/Webb_observations_of_interstellar_comet_3I_ATLAS-1400x461.avif 1400w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/10\/Webb_observations_of_interstellar_comet_3I_ATLAS-scaled.avif 2340w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Por que isso \u00e9 importante<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Como apenas o terceiro objeto interestelar j\u00e1 detectado (depois de 1I\/\u02bbOumuamua em 2017 e 2I\/Borisov em 2019) \u2014 o 3I\/ATLAS oferece uma <em>rara<\/em> chance de estudar mat\u00e9ria que se originou fora do nosso sistema solar. <a href=\"https:\/\/www.sci.news\/astronomy\/interstellar-comet-3i-atlas-14211.html?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Sci.News: Breaking Science News<\/a><br><\/li>\n\n\n\n<li>A composi\u00e7\u00e3o, atividade e trajet\u00f3ria dele podem nos dar pistas sobre outros sistemas estelares: como cometas s\u00e3o formados, ejetados, e como se comportam quando entram em um ambiente diferente (o nosso sistema solar).<br><\/li>\n\n\n\n<li>A mudan\u00e7a de cor e a atividade relatada (ex: emiss\u00e3o de gases como CO\u2082, poss\u00edvel ativa\u00e7\u00e3o de processo \u201cincomum\u201d) levantam quest\u00f5es sobre se h\u00e1 algo \u201cfora do normal\u201d \u2014 o que exige investiga\u00e7\u00e3o cuidadosa, mas n\u00e3o significa conclus\u00f5es precipitadas.<br><\/li>\n\n\n\n<li>A visibilidade tempor\u00e1ria significa que h\u00e1 uma \u201cjanela\u201d para observa\u00e7\u00e3o e coleta de dados antes que o Sol o oculte e depois que ele se afaste.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">O que ainda est\u00e1 em aberto \/ com incerteza<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A exata composi\u00e7\u00e3o e mecanismos de ativa\u00e7\u00e3o: por exemplo, por que a cor mudou para verde, o que isso significa em termos de gases ou part\u00edculas liberadas.<br><\/li>\n\n\n\n<li>O tamanho exato e a massa \u2014 h\u00e1 estimativas, mas ainda com margem de erro.<br><\/li>\n\n\n\n<li>A origem precisa: de qual sistema estelar ele veio, seu \u201chist\u00f3rico\u201d interestelar, embora haja estudos que sugerem ele pode ter origem no \u201cdisco espesso\u201d da via-l\u00e1ctea, o que implicaria uma idade muito maior. <a href=\"https:\/\/www.space.com\/astronomy\/interstellar-invader-comet-3i-atlas-could-be-investigated-by-these-spacecraft-as-it-races-past-the-sun-this-could-be-literally-a-once-in-a-lifetime-opportunity?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Space+1<\/a><br><\/li>\n\n\n\n<li>A trajet\u00f3ria futura detalhada e as implica\u00e7\u00f5es \u2014 embora se saiba que n\u00e3o amea\u00e7a a Terra. <a href=\"https:\/\/www.esa.int\/Science_Exploration\/Space_Science\/Comet_3I_ATLAS_frequently_asked_questions?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Ag\u00eancia Espacial Europeia+1<\/a><\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-cover has-custom-content-position is-position-bottom-left\"><img data-dominant-color=\"262218\" data-has-transparency=\"false\" style=\"--dominant-color: #262218;\" decoding=\"async\" width=\"1024\" height=\"576\" class=\"wp-block-cover__image-background wp-image-1801 not-transparent\" alt=\"\" src=\"https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9dfue-1024x576.avif\" data-object-fit=\"cover\" srcset=\"https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9dfue-1024x576.avif 1024w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9dfue-300x169.avif 300w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9dfue-768x432.avif 768w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9dfue-770x433.avif 770w, https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/08\/img-spacebetween-cke4s9dfue.avif 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-0 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<p class=\"has-text-align-center has-white-color has-text-color has-link-color has-small-font-size wp-elements-a4b08fb408e7debf78d7aa618d11c4d3\">O tamanho exato e a massa \u2014 h\u00e1 estimativas, mas ainda com margem de erro<\/p>\n<\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>Se voc\u00ea quiser, posso checar <strong>os dados mais recentes at\u00e9 a semana atual<\/strong> (outubro 2025) \u2014 h\u00e1 algumas observa\u00e7\u00f5es novas que ainda n\u00e3o foram amplamente divulgadas. Gostaria que eu fizesse isso?<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u00daltimas not\u00edcias sobre 3I\/ATLAS<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"tw-target-text\">12\/11: O cometa 3I Atlas, fotografado h\u00e1 dois dias no observat\u00f3rio usando o telesc\u00f3pio triplo RASA! via @astrofalls<\/h3>\n\n\n\n<figure class=\"wp-block-embed aligncenter is-type-rich is-provider-instagram wp-block-embed-instagram\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"sbi-embed-wrap\"><blockquote class=\"instagram-media sbi-embed\" data-instgrm-captioned data-instgrm-permalink=\"https:\/\/www.instagram.com\/p\/DQ79exgCYMC\/?utm_source=ig_embed&amp;utm_campaign=loading\" data-instgrm-version=\"14\" style=\" background:#FFF; border:0; border-radius:3px; box-shadow:0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width:658px; min-width:326px; padding:0; width:99.375%; width:-webkit-calc(100% - 2px); width:calc(100% - 2px);\"><div style=\"padding:16px;\"> <a href=\"https:\/\/www.instagram.com\/p\/DQ79exgCYMC\/?utm_source=ig_embed&amp;utm_campaign=loading\" style=\" background:#FFFFFF; line-height:0; padding:0 0; text-align:center; text-decoration:none; width:100%;\" target=\"_blank\"> <div style=\" display: flex; flex-direction: row; align-items: center;\"> <div style=\"background-color: #F4F4F4; border-radius: 50%; flex-grow: 0; height: 40px; margin-right: 14px; width: 40px;\"><\/div> <div style=\"display: flex; flex-direction: column; flex-grow: 1; justify-content: center;\"> <div style=\" background-color: #F4F4F4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 100px;\"><\/div> <div style=\" background-color: #F4F4F4; border-radius: 4px; flex-grow: 0; height: 14px; width: 60px;\"><\/div><\/div><\/div><div style=\"padding: 19% 0;\"><\/div> <div style=\"display:block; height:50px; margin:0 auto 12px; width:50px;\"><svg width=\"50px\" height=\"50px\" viewBox=\"0 0 60 60\" version=\"1.1\" xmlns=\"https:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"https:\/\/www.w3.org\/1999\/xlink\"><g stroke=\"none\" stroke-width=\"1\" fill=\"none\" fill-rule=\"evenodd\"><g transform=\"translate(-511.000000, -20.000000)\" fill=\"#000000\"><g><path d=\"M556.869,30.41 C554.814,30.41 553.148,32.076 553.148,34.131 C553.148,36.186 554.814,37.852 556.869,37.852 C558.924,37.852 560.59,36.186 560.59,34.131 C560.59,32.076 558.924,30.41 556.869,30.41 M541,60.657 C535.114,60.657 530.342,55.887 530.342,50 C530.342,44.114 535.114,39.342 541,39.342 C546.887,39.342 551.658,44.114 551.658,50 C551.658,55.887 546.887,60.657 541,60.657 M541,33.886 C532.1,33.886 524.886,41.1 524.886,50 C524.886,58.899 532.1,66.113 541,66.113 C549.9,66.113 557.115,58.899 557.115,50 C557.115,41.1 549.9,33.886 541,33.886 M565.378,62.101 C565.244,65.022 564.756,66.606 564.346,67.663 C563.803,69.06 563.154,70.057 562.106,71.106 C561.058,72.155 560.06,72.803 558.662,73.347 C557.607,73.757 556.021,74.244 553.102,74.378 C549.944,74.521 548.997,74.552 541,74.552 C533.003,74.552 532.056,74.521 528.898,74.378 C525.979,74.244 524.393,73.757 523.338,73.347 C521.94,72.803 520.942,72.155 519.894,71.106 C518.846,70.057 518.197,69.06 517.654,67.663 C517.244,66.606 516.755,65.022 516.623,62.101 C516.479,58.943 516.448,57.996 516.448,50 C516.448,42.003 516.479,41.056 516.623,37.899 C516.755,34.978 517.244,33.391 517.654,32.338 C518.197,30.938 518.846,29.942 519.894,28.894 C520.942,27.846 521.94,27.196 523.338,26.654 C524.393,26.244 525.979,25.756 528.898,25.623 C532.057,25.479 533.004,25.448 541,25.448 C548.997,25.448 549.943,25.479 553.102,25.623 C556.021,25.756 557.607,26.244 558.662,26.654 C560.06,27.196 561.058,27.846 562.106,28.894 C563.154,29.942 563.803,30.938 564.346,32.338 C564.756,33.391 565.244,34.978 565.378,37.899 C565.522,41.056 565.552,42.003 565.552,50 C565.552,57.996 565.522,58.943 565.378,62.101 M570.82,37.631 C570.674,34.438 570.167,32.258 569.425,30.349 C568.659,28.377 567.633,26.702 565.965,25.035 C564.297,23.368 562.623,22.342 560.652,21.575 C558.743,20.834 556.562,20.326 553.369,20.18 C550.169,20.033 549.148,20 541,20 C532.853,20 531.831,20.033 528.631,20.18 C525.438,20.326 523.257,20.834 521.349,21.575 C519.376,22.342 517.703,23.368 516.035,25.035 C514.368,26.702 513.342,28.377 512.574,30.349 C511.834,32.258 511.326,34.438 511.181,37.631 C511.035,40.831 511,41.851 511,50 C511,58.147 511.035,59.17 511.181,62.369 C511.326,65.562 511.834,67.743 512.574,69.651 C513.342,71.625 514.368,73.296 516.035,74.965 C517.703,76.634 519.376,77.658 521.349,78.425 C523.257,79.167 525.438,79.673 528.631,79.82 C531.831,79.965 532.853,80.001 541,80.001 C549.148,80.001 550.169,79.965 553.369,79.82 C556.562,79.673 558.743,79.167 560.652,78.425 C562.623,77.658 564.297,76.634 565.965,74.965 C567.633,73.296 568.659,71.625 569.425,69.651 C570.167,67.743 570.674,65.562 570.82,62.369 C570.966,59.17 571,58.147 571,50 C571,41.851 570.966,40.831 570.82,37.631\"><\/path><\/g><\/g><\/g><\/svg><\/div><div style=\"padding-top: 8px;\"> <div style=\" color:#3897f0; font-family:Arial,sans-serif; font-size:14px; font-style:normal; font-weight:550; line-height:18px;\">View this post on Instagram<\/div><\/div><div style=\"padding: 12.5% 0;\"><\/div> <div style=\"display: flex; flex-direction: row; margin-bottom: 14px; align-items: center;\"><div> <div style=\"background-color: #F4F4F4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(0px) translateY(7px);\"><\/div> <div style=\"background-color: #F4F4F4; height: 12.5px; transform: rotate(-45deg) translateX(3px) translateY(1px); width: 12.5px; flex-grow: 0; margin-right: 14px; margin-left: 2px;\"><\/div> <div style=\"background-color: #F4F4F4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(9px) translateY(-18px);\"><\/div><\/div><div style=\"margin-left: 8px;\"> <div style=\" background-color: #F4F4F4; border-radius: 50%; flex-grow: 0; height: 20px; width: 20px;\"><\/div> <div style=\" width: 0; height: 0; border-top: 2px solid transparent; border-left: 6px solid #f4f4f4; border-bottom: 2px solid transparent; transform: translateX(16px) translateY(-4px) rotate(30deg)\"><\/div><\/div><div style=\"margin-left: auto;\"> <div style=\" width: 0px; border-top: 8px solid #F4F4F4; border-right: 8px solid transparent; transform: translateY(16px);\"><\/div> <div style=\" background-color: #F4F4F4; flex-grow: 0; height: 12px; width: 16px; transform: translateY(-4px);\"><\/div> <div style=\" width: 0; height: 0; border-top: 8px solid #F4F4F4; border-left: 8px solid transparent; transform: translateY(-4px) translateX(8px);\"><\/div><\/div><\/div> <div style=\"display: flex; flex-direction: column; flex-grow: 1; justify-content: center; margin-bottom: 24px;\"> <div style=\" background-color: #F4F4F4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 224px;\"><\/div> <div style=\" background-color: #F4F4F4; border-radius: 4px; flex-grow: 0; height: 14px; width: 144px;\"><\/div><\/div><\/a><\/div><\/blockquote><script async src=\"\/\/platform.instagram.com\/en_US\/embeds.js\"><\/script><\/div>\n<\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Folha de Curitiba<br>Sonda Europa Clipper pode coletar amostras do cometa 3I\/ATLAS<\/h3>\n\n\n\n<p><a href=\"https:\/\/folhadecuritiba.com.br\/sonda-europa-clipper-cometa-3i-atlas\/\">https:\/\/folhadecuritiba.com.br\/sonda-europa-clipper-cometa-3i-atlas\/<\/a><br>30\/10<a href=\"https:\/\/nypost.com\/2025\/10\/25\/world-news\/manhattan-sized-interstellar-object-3i-atlas-has-grown-a-tail-as-it-approaches-the-sun-which-could-be-sign-of-a-maneuver\/?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Olhar Digital<br>Visitante interestelar 3I\/ATLAS passou pelo Sol \u2013 e agora?<\/h3>\n\n\n\n<p><a href=\"https:\/\/olhardigital.com.br\/2025\/10\/29\/ciencia-e-espaco\/visitante-interestelar-3i-atlas-passou-pelo-sol-e-agora\/#google_vignette\">https:\/\/olhardigital.com.br\/2025\/10\/29\/ciencia-e-espaco\/visitante-interestelar-3i-atlas-passou-pelo-sol-e-agora\/#google_vignette<\/a><br>29\/10<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Metsul<br>COMETA INTERESTELAR 3I\/ATLAS GERA ONDA DE MENTIRAS E TEORIAS DE CONSPIRA\u00c7\u00c3O<\/h3>\n\n\n\n<p><a href=\"https:\/\/metsul.com\/cometa-interestelar-3i-atlas-gera-onda-de-mentiras-e-teorias-de-conspiracao\/\">https:\/\/metsul.com\/cometa-interestelar-3i-atlas-gera-onda-de-mentiras-e-teorias-de-conspiracao\/<\/a><br>h\u00e1 1 dia<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><br>20\/11 | O Mist\u00e9rio Interestelar: O que a NASA divulgou sobre o 3I\/ATLAS<\/h2>\n\n\n\n<p id=\"block-07d6eb46-b9ed-473f-8f0d-40ad2c430913\">Dia 20\/110 foi um grande dia para quem acompanha o universo e suas surpresas: a <strong>NASA<\/strong>  divulgou imagens e descobertas in\u00e9ditas sobre o cometa <strong>interestelar 3I\/ATLAS<\/strong> \u2014 e o momento promete ser hist\u00f3rico. <strong>O hor\u00e1rio da confer\u00eancia foi \u00e0s 16hs e 17hs aqui no Brasil.<\/strong><\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/spacebetween.com.br\/index.php\/2025\/11\/19\/o-misterio-interestelar-tudo-o-que-a-nasa-vai-divulgar-hoje-sobre-o-3i-atlas\/\">Veja mais<\/a><\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">27\/11 | O Enigma do 3I\/ATLAS: Quando um Cometa revela metais no Espa\u00e7o Interestelar<\/h2>\n\n\n\n<p>Nesse ano de 2025, o cometa interestelar <strong>3I\/ATLAS<\/strong> se tornou uma das maiores fontes de espanto, especula\u00e7\u00e3o e estudo da astronomia moderna. Agora, um novo estudo \u2014 talvez o mais surpreendente desde a primeira detec\u00e7\u00e3o desse visitante interestelar \u2014 sugere que o objeto pode conter <strong>fra\u00e7\u00f5es met\u00e1licas significativas<\/strong>, uma anomalia t\u00e3o grande que desafia tudo o que sab\u00edamos sobre cometas.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/spacebetween.com.br\/index.php\/2025\/11\/27\/o-enigma-do-3i-atlas-quando-um-cometa-revela-metais-no-espaco-interestelar\/\">Veja mais<\/a><\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83e\ude90 <strong>Observa\u00e7\u00f5es e imagens mais recentes<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Novas imagens e observa\u00e7\u00f5es foram feitas por <strong>Hubble, Webb e telesc\u00f3pios terrestres<\/strong> (como o Very Large Telescope), mostrando o cometa em diferentes fases de sua trajet\u00f3ria pelo Sistema Solar. <a href=\"https:\/\/www.skyatnightmagazine.com\/news\/comet-3i-atlas-images?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Sky at Night Magazine<\/a><br><\/li>\n\n\n\n<li>A NASA e a <strong>ESA (via sonda JUICE)<\/strong> divulgaram fotos mostrando atividade comet\u00e1ria \u2014 coma, plasma e caudas de poeira \u2014 enquanto o 3I\/ATLAS segue sua rota e se afasta do Sol. <a href=\"https:\/\/www.livescience.com\/space\/comets\/new-nasa-esa-images-show-3i-atlas-getting-active-ahead-of-its-close-encounter-with-earth?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Live Science+1<\/a><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udccd <strong>Trajet\u00f3ria e aproxima\u00e7\u00e3o<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>O cometa <strong>se aproximar\u00e1 mais da Terra em 19 de dezembro de 2025<\/strong>, passando a cerca de <strong>270 milh\u00f5es de km<\/strong> \u2014 longe o suficiente para n\u00e3o oferecer nenhum risco. <a href=\"https:\/\/m.economictimes.com\/news\/new-updates\/how-can-you-watch-the-mysterious-interstellar-comet-3i\/atlas-the-cosmic-visitor-set-to-make-closest-approach-to-earth-on-dec-19\/articleshow\/125904440.cms?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">The Economic Times<\/a><br><\/li>\n\n\n\n<li>Ele j\u00e1 passou pelo ponto mais pr\u00f3ximo do Sol (peri\u00e9lio) em cerca de <strong>1,36\u20131,4 UA<\/strong> (posi\u00e7\u00e3o entre as \u00f3rbitas de Marte e da Terra). <a href=\"https:\/\/pt.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Wikip\u00e9dia<\/a><\/li>\n<\/ul>\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 title=\"Fotos mostram o 3I\/ATLAS antes de sua aproxima\u00e7\u00e3o com a Terra\" width=\"1170\" height=\"658\" src=\"https:\/\/www.youtube.com\/embed\/AZ49BoHklLk?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd2c <strong>Composi\u00e7\u00e3o e ci\u00eancia<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Estudos recentes indicam que <strong>3I\/ATLAS cont\u00e9m mol\u00e9culas como metanol e cianeto de hidrog\u00eanio<\/strong>, compostos interessantes do ponto de vista de qu\u00edmica pr\u00e9-bi\u00f3tica \u2014 ou seja, relacionadas a blocos que podem levar \u00e0 forma\u00e7\u00e3o de mol\u00e9culas org\u00e2nicas complexas. <a href=\"https:\/\/www.chron.com\/news\/space\/article\/interstellar-comet-3i-atlas-nasa-21231116.php?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Chron+1<\/a><br><\/li>\n\n\n\n<li>H\u00e1 <strong>especula\u00e7\u00f5es (controversas)<\/strong> sobre a natureza e origem do cometa, incluindo debates p\u00fablicos por figuras como o f\u00edsico Avi Loeb, mas a maioria dos astr\u00f4nomos continua a interpret\u00e1-lo como um cometa natural. <a href=\"https:\/\/en.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Wikipedia<\/a><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udef0\ufe0f <strong>Novas detec\u00e7\u00f5es e medidas<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Observa\u00e7\u00f5es recentes com telesc\u00f3pios espaciais mostraram <strong>detec\u00e7\u00e3o in\u00e9dita de raios-X<\/strong> vindo do cometa, indicando intera\u00e7\u00f5es entre o g\u00e1s expelido e o vento solar \u2014 algo ainda raro para objetos interestelares. <a href=\"https:\/\/avi-loeb.medium.com\/first-x-ray-detection-of-3i-atlas-9c2e9daf2880?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Medium+1<\/a><br><\/li>\n\n\n\n<li>Miss\u00f5es como <strong>JUICE (ESA)<\/strong> est\u00e3o registrando dados mesmo enquanto seguem seu curso rumo a J\u00fapiter; muitos dados ainda precisam ser transmitidos \u00e0 Terra e ser\u00e3o analisados em 2026. <a href=\"https:\/\/www.esa.int\/Science_Exploration\/Space_Science\/ESA_s_ExoMars_and_Mars_Express_observe_comet_3I_ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Ag\u00eancia Espacial Europeia<\/a><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83e\udde0 <strong>Contexto cient\u00edfico geral<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>3I\/ATLAS \u00e9 <strong>o terceiro objeto interestelar confirmado<\/strong> a passar pelo Sistema Solar, ap\u00f3s <strong>\u02bbOumuamua<\/strong> e <strong>2I\/Borisov<\/strong>. <a href=\"https:\/\/pt.wikipedia.org\/wiki\/3I\/ATLAS?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Wikip\u00e9dia<\/a><br><\/li>\n\n\n\n<li>O cometa oferece uma oportunidade \u00fanica para estudar <strong>materiais formados em outro sistema estelar<\/strong>, contribuindo com dados raros sobre a composi\u00e7\u00e3o qu\u00edmica e evolu\u00e7\u00e3o de objetos interestelares. <a href=\"https:\/\/www.space.com\/astronomy\/comets\/4-key-things-nasa-just-revealed-about-the-interstellar-comet-3i-atlas?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">Space<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Descoberta e Contexto Inicial Orbita, Din\u00e2mica e Origem Estelar Caracter\u00edsticas F\u00edsicas e Atividade Comet\u00e1ria Tamanho e Brilho O site TheSkyLive.com oferece um gr\u00e1fico da magnitude aparente do cometa ao longo do tempo, baseado nos dados JPL Horizons. \u00c9 uma \u00f3tima ferramenta visual para mostrar como o brilho evolui \u00e0 medida que o cometa se aproxima e se afasta do Sol. theskylive.com Complementarmente, observa\u00e7\u00f5es refletidas em artigos cient\u00edficos mostram uma curva de luz relativamente plana com amplitude inferior a 0,2\u202fmag e [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1887,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[3],"tags":[451,211,452,454,177,456,449,455,453],"class_list":["post-1787","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-astronomia","tag-3i-atlas","tag-alienigena","tag-atlas","tag-avi-loeb","tag-cometa","tag-hubble","tag-interestelar","tag-msu","tag-rubin-observatory-lsst"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/spacebetween.com.br\/wp-content\/uploads\/2025\/10\/img-spacebetween-dwj2382.avif","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/spacebetween.com.br\/index.php\/wp-json\/wp\/v2\/posts\/1787","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/spacebetween.com.br\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/spacebetween.com.br\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/spacebetween.com.br\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/spacebetween.com.br\/index.php\/wp-json\/wp\/v2\/comments?post=1787"}],"version-history":[{"count":23,"href":"https:\/\/spacebetween.com.br\/index.php\/wp-json\/wp\/v2\/posts\/1787\/revisions"}],"predecessor-version":[{"id":2078,"href":"https:\/\/spacebetween.com.br\/index.php\/wp-json\/wp\/v2\/posts\/1787\/revisions\/2078"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/spacebetween.com.br\/index.php\/wp-json\/wp\/v2\/media\/1887"}],"wp:attachment":[{"href":"https:\/\/spacebetween.com.br\/index.php\/wp-json\/wp\/v2\/media?parent=1787"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/spacebetween.com.br\/index.php\/wp-json\/wp\/v2\/categories?post=1787"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/spacebetween.com.br\/index.php\/wp-json\/wp\/v2\/tags?post=1787"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}