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Low-surface-brightness galaxy

diffuse galaxy with a surface brightness that is at least one magnitude lower than the ambient night sky

Pronunciation
/loʊ - ˈsərfəs - ˈbraɪtnəs ˈɡæləksi/
/ləʊ - ˈsəːfɪs - ˈbrʌɪtnəs ˈɡaləksi/
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