Optical photograph of the Perseus double star cluster, with chi Persei (left centre) & h Persei (right centre), in the constellation of Perseus. Located some 7100 light years from Earth, & separated by 50 light years from each other, the clusters are an estimated 10-20 million years old. 18, f/7, 20 minutes, Ekta 64 x 2."
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Creative#:
TOP10239966
Source:
達志影像
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RM
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須由TPG 完整授權
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