{"id":4187,"date":"2023-08-11T18:48:31","date_gmt":"2023-08-11T18:48:31","guid":{"rendered":"https:\/\/dailyai.com\/?p=4187"},"modified":"2024-03-28T00:45:54","modified_gmt":"2024-03-28T00:45:54","slug":"decoding-the-universe-with-ai-and-machine-learning","status":"publish","type":"post","link":"https:\/\/dailyai.com\/pt\/2023\/08\/decoding-the-universe-with-ai-and-machine-learning\/","title":{"rendered":"Descodificar o universo com a IA e a aprendizagem autom\u00e1tica"},"content":{"rendered":"<p><strong>Na antiga Babil\u00f3nia, os observadores de estrelas faziam uma cr\u00f3nica meticulosa do c\u00e9u noturno, gravando as suas observa\u00e7\u00f5es em t\u00e1buas para anotar os movimentos celestes mais subtis.\u00a0<\/strong><\/p>\n<p><span style=\"font-weight: 400;\">As suas observa\u00e7\u00f5es, juntamente com as de outras civiliza\u00e7\u00f5es antigas, lan\u00e7aram os alicerces para luminares como Johannes Kepler, que utilizou os dados de Tycho Brahe para desvendar as \u00f3rbitas el\u00edpticas dos planetas muito antes de termos os instrumentos para observar tais fen\u00f3menos com os nossos pr\u00f3prios olhos.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Atualmente, a humanidade n\u00e3o est\u00e1 menos ansiosa por descodificar os meandros do cosmos e a IA tornou-se um parceiro na nossa procura de respostas.\u00a0<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Lentes de vidro para gigabytes<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Inventado no in\u00edcio do s\u00e9culo XVII, o telesc\u00f3pio proporcionou aos astr\u00f3nomos uma janela para o cosmos. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Pela primeira vez, os olhos humanos podiam penetrar para al\u00e9m da atmosfera.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Para al\u00e9m de observar diretamente os objectos celestes atrav\u00e9s de telesc\u00f3pios, a humanidade tornou-se perita em calcular as interac\u00e7\u00f5es entre \u00f3rbitas, o que levou o astr\u00f3nomo franc\u00eas Urbain Le Verrier a prever a exist\u00eancia de Neptuno a partir da \u00f3rbita de \u00darano, antes de esta ser confirmada em 1846.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A matem\u00e1tica e a astronomia est\u00e3o intimamente ligadas h\u00e1 milhares de anos, e \u00e9 nesses c\u00e1lculos que a IA se destaca.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O lan\u00e7amento do telesc\u00f3pio espacial Kepler em 2009 marcou uma nova era na explora\u00e7\u00e3o extra-solar. Com a miss\u00e3o de identificar exoplanetas - planetas que se encontram fora do nosso sistema solar - atrav\u00e9s da monitoriza\u00e7\u00e3o do brilho de mais de 150 000 estrelas, o Kepler transmitiu um volume colossal de dados para a Terra.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Apesar de terem sido confirmados mais de 2600 exoplanetas durante a sua miss\u00e3o, os investigadores ainda hoje est\u00e3o a analisar os dados.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Em 2021, mais de 10 anos ap\u00f3s o lan\u00e7amento do telesc\u00f3pio, a NASA anunciou que um modelo de IA tinha ajudado os investigadores a acrescentar 301 exoplanetas recentemente validados \u00e0 cole\u00e7\u00e3o total de 4569.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O modelo, uma rede neural profunda <\/span><a href=\"https:\/\/arxiv.org\/abs\/2111.10009\"><span style=\"font-weight: 400;\">denominado ExoMiner<\/span><\/a><span style=\"font-weight: 400;\">O sistema de an\u00e1lise de dados da Terra, o sistema de an\u00e1lise de dados da Terra, pode validar de forma robusta estes exoplanetas propostos - um feito que de outra forma exigiria uma longa an\u00e1lise manual.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Hamed Valizadegan, o l\u00edder do projeto ExoMiner, afirmou: \"Quando o ExoMiner diz que algo \u00e9 um planeta, podemos ter a certeza de que \u00e9 um planeta. <\/span><span style=\"font-weight: 400;\">O ExoMiner \u00e9 altamente preciso e, em alguns aspectos, mais fi\u00e1vel do que os classificadores de m\u00e1quinas existentes e do que os especialistas humanos que pretende imitar, devido aos enviesamentos que acompanham a rotulagem humana\".<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Origens universais<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">O outback da Austr\u00e1lia Ocidental \u00e9 o lar da <\/span><a href=\"https:\/\/www.mwatelescope.org\/\"><span style=\"font-weight: 400;\">Murchison Widefield Array (MWA)<\/span><\/a><span style=\"font-weight: 400;\">. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ao contr\u00e1rio dos telesc\u00f3pios tradicionais, o MWA \u00e9 um radiotelesc\u00f3pio que escuta as primeiras ondas de r\u00e1dio do universo.\u00a0<\/span><\/p>\n<figure id=\"attachment_4189\" aria-describedby=\"caption-attachment-4189\" style=\"width: 1024px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-4189 size-large\" src=\"https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-1024x769.jpg\" alt=\"\" width=\"1024\" height=\"769\" srcset=\"https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-1024x769.jpg 1024w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-300x225.jpg 300w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-768x577.jpg 768w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-1536x1154.jpg 1536w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-370x278.jpg 370w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-800x601.jpg 800w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-20x15.jpg 20w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-740x556.jpg 740w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-1600x1202.jpg 1600w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-64x48.jpg 64w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption id=\"caption-attachment-4189\" class=\"wp-caption-text\">Uma das muitas matrizes do MWA. Fonte: <a href=\"https:\/\/en.wikipedia.org\/wiki\/Murchison_Widefield_Array#\/media\/File:MWA_32T_Tile.jpg\">Wikipedia Commons<\/a>.<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">Ao captar sinais de r\u00e1dio do espa\u00e7o, o MWA permite vislumbrar o estado do Universo h\u00e1 cerca de 13 mil milh\u00f5es de anos. Isto n\u00e3o \u00e9 isento de desafios, uma vez que as interfer\u00eancias radioel\u00e9ctricas dos dias de hoje amea\u00e7am abafar as antigas declara\u00e7\u00f5es do Universo.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Utilizando a IA, os investigadores podem <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S2213133723000434\">filtrar e diferenciar<\/a> entre o ru\u00eddo de r\u00e1dio e os sussurros primordiais do universo, permitindo uma an\u00e1lise mais precisa.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Visualiza\u00e7\u00e3o de objectos celestes<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">O <\/span><a href=\"https:\/\/eventhorizontelescope.org\/\"><span style=\"font-weight: 400;\">Telesc\u00f3pio Event Horizon<\/span><\/a><span style=\"font-weight: 400;\"> (EHT), que captou a primeira imagem de um buraco negro, baseou-se no processamento de IA para converter as suas observa\u00e7\u00f5es em algo claro e coerente.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> O EHT junta v\u00e1rios telesc\u00f3pios de todo o mundo para criar um mega-telesc\u00f3pio \u00fanico.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Usando as for\u00e7as combinadas de m\u00faltiplos conjuntos de telesc\u00f3pios, o EHT p\u00f4de observar o buraco negro supermassivo no centro da Via L\u00e1ctea. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Para transformar estas observa\u00e7\u00f5es numa imagem exacta, \u00e9 necess\u00e1rio que a aprendizagem autom\u00e1tica (ML) calcule a forma e o formato mais prov\u00e1veis a partir dos dados dispon\u00edveis.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O modelo ML, <\/span><a href=\"https:\/\/earthsky.org\/space\/black-hole-messier-87-machine-learning-primo\/\"><span style=\"font-weight: 400;\">PRIMO<\/span><\/a><span style=\"font-weight: 400;\">O projeto, que foi publicado em 2007, analisou as caracter\u00edsticas de 30 000 buracos negros simulados para gerar a imagem abaixo amplamente divulgada.<\/span><\/p>\n<figure id=\"attachment_4188\" aria-describedby=\"caption-attachment-4188\" style=\"width: 1024px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-4188 size-large\" src=\"https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole-1024x822.png\" alt=\"\" width=\"1024\" height=\"822\" srcset=\"https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole-1024x822.png 1024w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole-300x241.png 300w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole-768x617.png 768w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole-370x297.png 370w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole-800x642.png 800w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole-20x16.png 20w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole-740x594.png 740w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole-60x48.png 60w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole.png 1095w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption id=\"caption-attachment-4188\" class=\"wp-caption-text\">A primeira imagem de um buraco negro foi criada com a ajuda da IA. Fonte: <a href=\"https:\/\/eventhorizontelescope.org\/\">Telesc\u00f3pio Even Horizon<\/a>.<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\"> Estima-se que o buraco negro tenha uma massa 6,5 mil milh\u00f5es de vezes superior \u00e0 do Sol.\u00a0<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">IA descobre asteroide \"potencialmente perigoso<\/span><\/h2>\n<p>Ouvimos falar muito dos riscos da IA, mas e se ela nos salvasse de um asteroide mortal?<\/p>\n<p><span style=\"font-weight: 400;\">Os investigadores do futuro Observat\u00f3rio Vera Rubin, no norte do Chile, descobriram recentemente um asteroide potencialmente perigoso utilizando a IA.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O Observat\u00f3rio Vera Rubin, no norte do Chile, ainda em constru\u00e7\u00e3o, vai tornar-se a c\u00e2mara digital mais potente utilizada para fotografia astron\u00f3mica,\u00a0<\/span><\/p>\n<p><a href=\"https:\/\/www.washington.edu\/news\/2023\/07\/31\/heliolinc3d\/\"><span style=\"font-weight: 400;\">HelioLinc3D<\/span><\/a><span style=\"font-weight: 400;\">, o programa de IA respons\u00e1vel por esta descoberta, foi concebido para apoiar os esfor\u00e7os do Observat\u00f3rio Vera C. Rubin na dete\u00e7\u00e3o de aster\u00f3ides. O modelo foi implementado num teste no observat\u00f3rio ATLAS, no Havai.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A IA revelou um asteroide com cerca de 600 p\u00e9s de largura (180 metros), denominado 2022 SF289.\u00a0<\/span><\/p>\n<p><iframe loading=\"lazy\" title=\"2022 SF289: Novo c\u00f3digo detecta o seu primeiro asteroide potencialmente perigoso\" width=\"1080\" height=\"608\" src=\"https:\/\/www.youtube.com\/embed\/bsuUWt4udKg?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><\/p>\n<p><span style=\"font-weight: 400;\">Prev\u00ea-se que este objeto celeste, com cerca de 182 m (600 p\u00e9s de largura), se aproxime da Terra at\u00e9 140.000 milhas (225.000 quil\u00f3metros).\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Tendo em conta que a dist\u00e2ncia m\u00e9dia da lua \u00e0 Terra \u00e9 de cerca de 384 400 km (238 855 milhas) - est\u00e1 mais pr\u00f3xima do que os n\u00fameros brutos parecem sugerir - designando-a como um Asteroide Potencialmente Perigoso (PHA). Fiquem descansados - n\u00e3o se espera que nos atinja.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O HelioLinc3D \u00e9 muito mais r\u00e1pido e eficiente na dete\u00e7\u00e3o de aster\u00f3ides potencialmente perigosos do que os m\u00e9todos actuais.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> Tradicionalmente, isto requer a captura de imagens de segmentos espec\u00edficos do c\u00e9u v\u00e1rias vezes por noite, enquanto o HelioLinc3D requer menos observa\u00e7\u00f5es e funciona bem com objectos t\u00e9nues.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Os telesc\u00f3pios captam frequentemente uma densa dispers\u00e3o de ru\u00eddo in\u00fatil quando observam objectos t\u00e9nues, o que torna a dete\u00e7\u00e3o de aster\u00f3ides genu\u00ednos excecionalmente dif\u00edcil.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Larry Denneau, astr\u00f3nomo principal do ATLAS, destacou a <\/span><a href=\"https:\/\/www.washington.edu\/news\/2023\/07\/31\/heliolinc3d\/\"><span style=\"font-weight: 400;\">implica\u00e7\u00f5es desta descoberta<\/span><\/a><span style=\"font-weight: 400;\">: \"Qualquer estudo ter\u00e1 dificuldade em descobrir objectos como 2022 SF289 que est\u00e3o perto do seu limite de sensibilidade, mas o HelioLinc3D mostra que \u00e9 poss\u00edvel recuperar estes objectos t\u00e9nues desde que sejam vis\u00edveis durante v\u00e1rias noites. Isto, de facto, d\u00e1-nos um telesc\u00f3pio 'maior e melhor'\".<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O cientista do Rubin e l\u00edder da equipa do HelioLinc3D, Mario Juri\u0107, disse: \"Isto \u00e9 apenas uma pequena amostra do que esperar do Observat\u00f3rio Rubin em menos de dois anos, quando o HelioLinc3D estiver a descobrir um objeto como este todas as noites.\"\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">E acrescentou: \"Mas, de um modo mais geral, \u00e9 uma antevis\u00e3o da pr\u00f3xima era da astronomia de dados intensivos. Do HelioLinc3D aos c\u00f3digos assistidos por IA, a pr\u00f3xima d\u00e9cada de descobertas ser\u00e1 uma hist\u00f3ria de avan\u00e7os nos algoritmos, tanto quanto nos novos e grandes telesc\u00f3pios\".<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Determinar a idade das estrelas com IA<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">A IA est\u00e1 tamb\u00e9m a ajudar os investigadores a tra\u00e7ar a hist\u00f3ria do universo.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Um modelo recente desenvolvido como uma vers\u00e3o melhorada por IA de um projeto mais antigo, <\/span><a href=\"https:\/\/arxiv.org\/abs\/2304.12197\"><span style=\"font-weight: 400;\">EAGLES (Estimativa de idades a partir de larguras equivalentes de l\u00edtio)<\/span><\/a><span style=\"font-weight: 400;\">analisa a presen\u00e7a de l\u00edtio nas estrelas para estimar a sua idade.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Historicamente, todas as estrelas come\u00e7am a vida com uma propor\u00e7\u00e3o semelhante de l\u00edtio. No entanto, \u00e0 medida que envelhecem, este l\u00edtio esgota-se a taxas variadas devido a factores como as suas massas e temperaturas associadas.\u00a0<\/span><\/p>\n<figure id=\"attachment_4192\" aria-describedby=\"caption-attachment-4192\" style=\"width: 728px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-4192\" src=\"https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/shutterstock_686408446.jpg\" alt=\"As estrelas podem ser envelhecidas atrav\u00e9s do seu teor de l\u00edtio. \" width=\"728\" height=\"485\" srcset=\"https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/shutterstock_686408446.jpg 1000w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/shutterstock_686408446-300x200.jpg 300w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/shutterstock_686408446-768x512.jpg 768w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/shutterstock_686408446-370x247.jpg 370w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/shutterstock_686408446-800x534.jpg 800w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/shutterstock_686408446-20x13.jpg 20w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/shutterstock_686408446-740x494.jpg 740w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/shutterstock_686408446-72x48.jpg 72w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><figcaption id=\"caption-attachment-4192\" class=\"wp-caption-text\">As estrelas podem ser envelhecidas atrav\u00e9s do seu teor de l\u00edtio.<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">A temperatura de uma estrela, que \u00e9 indicativa da sua massa, desempenha um papel fundamental no seu consumo de l\u00edtio.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Nas estrelas mais quentes, o aumento da convec\u00e7\u00e3o nas camadas exteriores causa turbul\u00eancia, enviando o l\u00edtio para o interior da estrela e fundindo-se com prot\u00f5es para produzir dois n\u00facleos de h\u00e9lio. Consequentemente, os n\u00edveis de l\u00edtio diminuem ao longo do tempo.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Observando a abund\u00e2ncia de l\u00edtio de uma estrela a par da sua temperatura, os astr\u00f3nomos podem extrapolar a sua idade.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Tradicionalmente, a determina\u00e7\u00e3o da idade de uma estrela a partir do seu l\u00edtio envolvia a avalia\u00e7\u00e3o da for\u00e7a do l\u00edtio em dados espectrogr\u00e1ficos e a sua correspond\u00eancia com modelos de evolu\u00e7\u00e3o estelar estabelecidos.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Este processo n\u00e3o s\u00f3 foi \u00e1rduo como tamb\u00e9m limitado no seu \u00e2mbito. George Weaver, da Universidade de Keele, no Reino Unido, observou que isto \u00e9 \"dif\u00edcil de fazer e requer muito trabalho\".\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Weaver e o astrof\u00edsico Robin Jeffries, da Universidade de Keele, desenvolveram o algoritmo EAGLES para simplificar este processo.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ao treinar o EAGLES num conjunto de dados de 6.000 estrelas de 52 aglomerados observados pelo <\/span><a href=\"https:\/\/www.esa.int\/Science_Exploration\/Space_Science\/Gaia\"><span style=\"font-weight: 400;\">Miss\u00e3o Gaia<\/span><\/a><span style=\"font-weight: 400;\">A partir de um modelo de c\u00e1lculo do sal\u00e1rio de uma estrela, com um m\u00ednimo de trabalho manual.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O EAGLES ser\u00e1 brevemente utilizado em dois estudos extensivos: o estudo WEAVE no telesc\u00f3pio William Herschel em 2023 e o estudo 4MOST no telesc\u00f3pio VISTA do Observat\u00f3rio Europeu do Sul em 2024.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\"Estes s\u00e3o dois grandes estudos espectrosc\u00f3picos que ir\u00e3o... obter espectros de literalmente dezenas de milh\u00f5es de estrelas\", afirmou Jeffries. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Um dos objectivos dos estudos \u00e9 tra\u00e7ar a hist\u00f3ria da forma\u00e7\u00e3o de estrelas em v\u00e1rias popula\u00e7\u00f5es de estrelas na gal\u00e1xia.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">A xAI de Elon Musk<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">N\u00e3o podemos deixar Elon Musk de fora de uma discuss\u00e3o existencial que engloba o cosmos.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Em julho, Musk revelou o seu mais recente projeto lunar - <\/span><a href=\"https:\/\/x.ai\/\"><span style=\"font-weight: 400;\">xAI<\/span><\/a><span style=\"font-weight: 400;\">. Este <\/span><a href=\"https:\/\/dailyai.com\/pt\/2023\/07\/musks-mission-for-xai-is-to-find-out-what-the-hell-is-really-going-on\/\"><span style=\"font-weight: 400;\">nova e misteriosa empresa de IA<\/span><\/a><span style=\"font-weight: 400;\"> pretende investigar conceitos cient\u00edficos prementes como a mat\u00e9ria negra, a energia negra, o Paradoxo de Fermi e a exist\u00eancia de extraterrestres.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Nas palavras de Musk, a xAI ir\u00e1 investigar \"quest\u00f5es fundamentais\" relativas \u00e0 \"realidade\" e ao \"universo\".<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Musk e a sua equipa realizaram uma discuss\u00e3o no Twitter Spaces sobre a xAI e, embora intrigante, n\u00e3o esclareceu muito sobre a estrat\u00e9gia da empresa.\u00a0<\/span><span style=\"font-weight: 400;\">A partir de agosto de 2023, n\u00e3o h\u00e1 informa\u00e7\u00f5es concretas sobre o que tenciona fazer e como.\u00a0<\/span><\/p>\n<blockquote class=\"twitter-tweet\">\n<p dir=\"ltr\" lang=\"en\">Excelente resumo <a href=\"https:\/\/t.co\/s2QE9zuzp4\">https:\/\/t.co\/s2QE9zuzp4<\/a><\/p>\n<p>- xAI (@xai) <a href=\"https:\/\/twitter.com\/xai\/status\/1680044214095339521?ref_src=twsrc%5Etfw\">15 de julho de 2023<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<p><span style=\"font-weight: 400;\">Alguns especulam que a xAI ir\u00e1 construir modelos de IA orientados para a ci\u00eancia e para as estat\u00edsticas, de modo a impulsionar a investiga\u00e7\u00e3o. Poder\u00e1 assumir a forma de um \"agente geral\" de IA orientado para a ci\u00eancia, capaz de desempenhar virtualmente qualquer uma das fun\u00e7\u00f5es acima referidas. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">A xAI poderia contribuir com o seu poder de computa\u00e7\u00e3o para os investigadores cient\u00edficos, aliviando alguns estrangulamentos associados \u00e0 implanta\u00e7\u00e3o de modelos complexos em ambientes acad\u00e9micos.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Por outro lado, a xAI pode apenas culminar noutro modelo de linguagem de grande dimens\u00e3o (LLM), ou talvez n\u00e3o d\u00ea em nada - o que seria uma desilus\u00e3o, dado o calibre da equipa fundadora da empresa.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Se a xAI fornecer um modelo de IA super-poderoso para fins de investiga\u00e7\u00e3o, isso poder\u00e1 permitir aos cientistas criar modelos especializados para todo o tipo de aplica\u00e7\u00f5es em f\u00edsica, astronomia, medicina, climatologia e outros dom\u00ednios.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Apesar dos seus problemas, a IA equipa a humanidade com as ferramentas necess\u00e1rias para explorar novas fronteiras que s\u00f3 h\u00e1 alguns anos se pensava serem poss\u00edveis.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Esta tecnologia, ainda em fase embrion\u00e1ria, est\u00e1 a revelar o seu potencial para identificar aster\u00f3ides perigosos, exoplanetas e as idades das estrelas, permitindo-nos alargar os nossos horizontes c\u00f3smicos e ampliar o nosso conhecimento do universo. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Pondo de parte todos os riscos, a utiliza\u00e7\u00e3o da IA para explorar os segredos do universo \u00e9 uma perspetiva tentadora.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Na antiga Babil\u00f3nia, os observadores de estrelas faziam uma cr\u00f3nica meticulosa do c\u00e9u noturno, gravando as suas observa\u00e7\u00f5es em t\u00e1buas para anotar os movimentos celestes mais subtis.  As suas observa\u00e7\u00f5es, juntamente com as de outras civiliza\u00e7\u00f5es antigas, lan\u00e7aram as bases para luminares como Johannes Kepler, que utilizou os dados de Tycho Brahe para desvendar as \u00f3rbitas el\u00edpticas dos planetas muito antes de termos os instrumentos para observar tais fen\u00f3menos com os nossos pr\u00f3prios olhos. Atualmente, a humanidade n\u00e3o est\u00e1 menos ansiosa por descodificar as complexidades do cosmos e a IA tornou-se um parceiro na nossa procura de respostas.  De lentes de vidro a gigabytes Inventado no in\u00edcio do s\u00e9culo XVII, o telesc\u00f3pio proporcionou aos astr\u00f3nomos uma<\/p>","protected":false},"author":2,"featured_media":4190,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[84],"tags":[298,188,105,297,296,223],"class_list":["post-4187","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-astronomy","tag-elon-musk","tag-machine-learning","tag-nasa","tag-space","tag-xai"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Decoding the universe with AI and machine learning | DailyAI<\/title>\n<meta name=\"description\" content=\"In ancient Babylonia, star-gazers meticulously chronicled the night sky, carving their observations in tablets to note the subtlest celestial movements.\u00a0\" \/>\n<meta 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