Emission nebula and cluster, optical image. The emission nebula sh2-142 is associated with the loose star cluster NGC 7380 (the brighter stars seen here). The gas glows as radiation from the newly formed stars ionises the hydrogen it contains. The cluster and nebula lie around 7000 light years from Earth in the constellation Cepheus.
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TOP10239681
Source:
達志影像
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RM
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