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✨ SIRIUS: A "ESTRELA-CÃO" QUE DOMINA O CÉU NOTURNO! 1️⃣ A RAINHA DO BRILHO Sirius, a estrela mais brilhante visível da Terra , está a 8,6 anos-luz de distância, na constelação de Canis Major . Seu nome vem do grego "Seirios" . 2️⃣ SISTEMA DUPLO E HISTÓRIA Sirius A: Estrela principal, 2x mais massiva que o Sol e 25x mais luminosa. Sirius B: Anã branca invisível a olho nu, descoberta em 1862 – um dos primeiros exemplos desse tipo estelar. Cu
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