{"id":1871,"date":"2009-10-20T12:11:00","date_gmt":"2009-10-20T15:11:00","guid":{"rendered":"https:\/\/www.ufrgs.br\/blogdabc\/descoberta-reforca-busca-por-novas\/"},"modified":"2020-03-18T16:40:49","modified_gmt":"2020-03-18T19:40:49","slug":"descoberta-reforca-busca-por-novas","status":"publish","type":"post","link":"https:\/\/www.ufrgs.br\/bibliotecacentral\/descoberta-reforca-busca-por-novas\/","title":{"rendered":"Descoberta refor\u00e7a a busca por \u201cnovas Terras\u201d"},"content":{"rendered":"<p>Astr\u00f4nomos encontraram mais 32 planetas fora do nosso Sistema SolarUma descoberta refor\u00e7ou a convic\u00e7\u00e3o dos cientistas de que planetas s\u00e3o comuns na gal\u00e1xia \u2013 e aumentou as esperan\u00e7as de encontrar, no futuro, algum que sustente vida, como a Terra. Astr\u00f4nomos do Observat\u00f3rio Europeu do Sul (ESO) localizaram mais 32 exoplanetas (de fora do Sistema Solar) orbitando estrelas distantes.<\/p>\n<p>Os novos planetas extrassolares, observados pelo telesc\u00f3pio do ESO em La Silla, no Chile, s\u00e3o gigantes, compostos de gases. Os maiores t\u00eam cinco vezes a massa de J\u00fapiter. Os menores, cinco vezes a massa da Terra. Foram encontrados em torno de estrelas \u201cpobres em metal\u201d, at\u00e9 ent\u00e3o considerados lugares in\u00f3spitos para a forma\u00e7\u00e3o de planetas.<\/p>\n<p>Conforme as estimativas dos cientistas, liderados por Michel Mayor, da Universidade de Genebra, pelo menos 40% das estrelas da Via L\u00e1ctea similares ao Sol contam com planetas de baixa massa em sua \u00f3rbita. O primeiro exoplaneta foi encontrado em 1995. Com o an\u00fancio do ESO, o n\u00famero total sobe agora para 400.<\/p>\n<p>A descoberta anunciada ontem foi feita com uso do instrumento Harps, um espectr\u00f3grafo \u2013 ferramenta que decomp\u00f5e a luz para analis\u00e1-la. O dispositivo criado pelo grupo de Mayor j\u00e1 permitiu a localiza\u00e7\u00e3o de 75 exoplanetas. Segundo o astr\u00f4nomo St\u00e9phane Udry, um novo instrumento est\u00e1 em desenvolvimento \u2013 e deve possibilitar a detec\u00e7\u00e3o de \u201cplanetas g\u00eameos\u201d da Terra em cinco a 10 anos.<\/p>\n<p>Fonte: <a href=\"http:\/\/zerohora.clicrbs.com.br\/zerohora\/jsp\/default2.jsp?uf=1&amp;local=1&amp;source=a2690274.xml&amp;template=3898.dwt&amp;edition=13351&amp;section=1014\">Zero Hora Online<\/a><br \/>\nData: 20\/10\/2009<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Astr\u00f4nomos encontraram mais 32 planetas fora do nosso Sistema SolarUma descoberta refor\u00e7ou a convic\u00e7\u00e3o dos cientistas de que planetas s\u00e3o &hellip; <a class=\"kt-excerpt-readmore more-link\" href=\"https:\/\/www.ufrgs.br\/bibliotecacentral\/descoberta-reforca-busca-por-novas\/\">Leia mais<\/a>&hellip; <a class=\"kt-excerpt-readmore more-link\" href=\"https:\/\/www.ufrgs.br\/bibliotecacentral\/descoberta-reforca-busca-por-novas\/\">Leia mais<\/a><\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"kt_blocks_editor_width":"","footnotes":""},"categories":[109],"tags":[],"class_list":["post-1871","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - 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