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Nebulosas

LDN 1622: Nebulosa Negra em Orion

A silhueta de uma intrigante nebulosa escura habita esta cena cósmica. A Nebulosa Escura de Lynds (LDN) 1622 aparece contra um fundo fraco de gás hidrogênio incandescente, que só é facilmente visto em longas exposições telescópicas da região. O LDN 1622 fica perto do plano da nossa Galáxia, a Via Láctea, perto do céu do Loop de Barnard, uma grande nuvem em torno do complexo rico de nebulosas de emissão encontradas no Cinturão e na Espada de Órion. Mas a obscurecida poeira do LDN 1622 é considerada muito mais próxima das nebulosas mais famosas de Órion, talvez a apenas 500 anos-luz de distância. A essa distância, esse campo de visão de 1 grau de largura teria menos de 10 anos-luz. Sua aparência de presságio empresta a esta expansão escura um nome popular, a Nebulosa do Boogeyman.

Crédito de imagem e direitos autorais: Tapio Lahtinen

Texto: Júlia Machado

NASA

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