hubble constant
英
美
- 哈勃常数
详细释义
Noun:
-
(cosmology) the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer; the Hubble constant is not actually a constant, but is regarded as measuring the expansion rate today
相关词汇
- Hubble parameter 哈勃参数
【近义词】
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