标签： OB星协

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2021年7月15日 The Dark Tower in Scorpius Image Credit & Copyright: Data – Martin Pugh Processing – Rocco Sung Explanation: In silhouette against a crowded star field along the tail of the arachnalogical constellation Scorpius, this dusty cosmic cloud evokes for some the image of an ominous dark tower. In fact, clumps of dust and molecular gas c...