{"id":1213,"date":"2020-05-30T08:00:17","date_gmt":"2020-05-30T11:00:17","guid":{"rendered":"https:\/\/museuweg.net\/blog\/?p=1213"},"modified":"2026-02-09T15:46:37","modified_gmt":"2026-02-09T18:46:37","slug":"o-que-aconteceria-se-o-sol-desaparecesse","status":"publish","type":"post","link":"https:\/\/museuweg.net\/blog\/o-que-aconteceria-se-o-sol-desaparecesse\/","title":{"rendered":"O que aconteceria se o Sol desaparecesse?"},"content":{"rendered":"

Certo dia voc\u00ea acorda e percebe que o sol sumiu! \u00c9 claro que essa \u00e9 uma hist\u00f3ria imposs\u00edvel de acontecer \u2014 ele jamais desapareceria de uma hora para a outra. Alguns astr\u00f4nomos at\u00e9 calculam que daqui a 7,5 bilh\u00f5es de anos o nosso sol come\u00e7ar\u00e1 a desaparecer, sofrendo uma explos\u00e3o que dar\u00e1 origem a uma estrela menor, que continuar\u00e1 a brilhar.<\/span><\/p>\n

Mas vamos supor que o sol desapareceu. Nesse caso, como ele leva um pouco mais de 8 minutos para viajar at\u00e9 n\u00f3s, esse seria o tempo que nossa estrela ainda permaneceria vis\u00edvel no c\u00e9u. A Terra n\u00e3o cairia na mais completa escurid\u00e3o logo de cara. As cidades continuariam iluminadas enquanto houvesse eletricidade, as estrelas ainda estariam brilhando no c\u00e9u e os planetas que fazem parte do Sistema Solar ficariam vis\u00edveis por um curto per\u00edodo de tempo. Mas logo o planeta ficaria sem luz e os efeitos da escurid\u00e3o n\u00e3o seriam nada animadores. Dependendo da quantidade de energia que a esp\u00e9cie humana fosse capaz de produzir artificialmente, at\u00e9 poderia resistir alguns anos.<\/span><\/p>\n

 <\/p>\n

\"\"<\/p>\n

 <\/p>\n

Sem poder fazer fotoss\u00edntese, os primeiros a sumirem da Terra seriam os vegetais, j\u00e1 que n\u00e3o poderiam mais usar os raios solares para produzir alimento, e a maioria das esp\u00e9cies de menor porte iriam sumir em pouco tempo. Em seguida, desapareceriam aqueles que dependem dos vegetais para sobreviver: os animais herb\u00edvoros.<\/span><\/p>\n

 <\/p>\n

\"\"<\/p>\n

 <\/p>\n

Outro problema seria que nosso planeta sofreria com o resfriamento, a temperatura da superf\u00edcie da Terra despencaria para zero grau depois da primeira semana sem sol, com o tempo, os oceanos tamb\u00e9m congelariam e o nosso mundo se transformaria em uma esfera de gelo, interrompendo o ciclo da \u00e1gua. Sem \u00e1gua, \u00e9 muito dif\u00edcil imaginar vida.\u00a0<\/span><\/p>\n

\u00a0<\/strong><\/strong><\/p>\n

\"\"<\/p>\n

 <\/p>\n

S\u00f3 que, antes de tudo isso acontecer, precisamos lembrar que o sol concentra 99,8% da massa do Sistema Solar, sendo a for\u00e7a gravitacional que mant\u00e9m todos os planetas onde est\u00e3o, \u201cpresos\u201d em suas \u00f3rbitas ao redor do sol. Isso quer dizer que, a primeira coisa que aconteceria, \u00e9 que tanto a Terra, a lua e demais planetas sairiam \u201cvoando\u201d espa\u00e7o afora.<\/span><\/p>\n

A Terra orbita a uma velocidade de 107.200 km\/h e, a princ\u00edpio, continuaria na mesma velocidade depois que o sol sumisse, mas em vez de movimentos circulares ele seguiria andando em linha reta. Se n\u00e3o colidisse com outros planetas ou aster\u00f3ides, a essa velocidade a Terra levaria 43 mil anos para cruzar uma dist\u00e2ncia de 4,3 anos-luz. De modo que, ap\u00f3s 1 bilh\u00e3o de anos, nosso planeta teria andado 100 mil anos-luz, o que vem a ser a extens\u00e3o de toda a Via L\u00e1ctea.<\/p>\n

 <\/p>\n

\"\"<\/p>\n

 <\/p>\n

Muito curioso, n\u00e9? Mas pode ficar tranquilo, enquanto voc\u00ea existir, o sol vai continuar brilhando! \ud83d\ude42<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Certo dia voc\u00ea acorda e percebe que o sol sumiu! O que vai acontecer com a Terra?<\/p>\n","protected":false},"author":4,"featured_media":1214,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,3],"tags":[351,41,496,386,350,495],"class_list":["post-1213","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ciencia-2","category-eletricidade","tag-curiosidade","tag-energia","tag-escuridao","tag-luz","tag-planeta-terra","tag-sol"],"yoast_head":"\nO que aconteceria se o Sol desaparecesse? - Blog com Ci\u00eancia<\/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:\/\/museuweg.net\/blog\/o-que-aconteceria-se-o-sol-desaparecesse\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"O que aconteceria se o Sol desaparecesse? - Blog com Ci\u00eancia\" \/>\n<meta property=\"og:description\" content=\"Certo dia voc\u00ea acorda e percebe que o sol sumiu! 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