| 释义 |
Hubble's constant/ˈhʌb(ə)lz/n. Astron. 【天】 1 the ratio of the speed of recession of a galaxy to its distance from the observer 哈勃常数(星系的后退速度与观测者距其距离之比) 2 the reciprocal of this, interpretable as the age of the universe 哈勃常数的倒数(相当于宇宙的存在年龄)[named after E.P. Hubble, US astronomer (d. 1953)] |