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O Cinturão ou a Cintura de Orion, popularmente conhecido como Três Marias ou Três Reis, é um asterismo de três estrelas que formam o cinturão da constelação de Orion, o caçador. As estrelas, facilmente identificáveis no céu pelo brilho e por estarem alinhadas, são conhecidas como Mintaka, Alnilam e Alnitak. ja conheçia o verdadeiro nomes delas ? curti e comenta #Astronomia #galaxia #Astronomia #planetas
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Rigel , a supergigante azul! Vamos conhecer a estrela mais brilhante da constelação de orion, e a sétima mais brilhante do céu. A supergigante azul Rigel. Rígel está uma distância entre 700 a 900 anos-luz de nós, sendo cerca de 18 vezes mais massiva e 85 000 vezes mais luminosa que o sol. Rigel na verdade esconde um sistema estelar triplo, onde outras duas estrelas menores orbitam no mesmo centro gravitacional da estrela principal. As estrelas menores são em média 3 vezes maiores e 3 vezes
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