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单词 Hubble Deep Field
释义
Hubble Deep Field
n.
An image taken by the Hubble Space Telescope of a small area of sky located in the constellation Ursa Major and chosen because it contains few obstacles that interfere with deep-space imaging. The long exposure time used enabled imaging of distant galaxies as they appeared very early in the history of the universe.
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更新时间:2024/9/22 3:57:55