General relativity predicts that the wavelength of this light will be shifted by a small amount due to the galaxies' mass, in an effect called gravitational redshift.
广义相对论预言这种光的波长会因这些星系的质量而有少量的偏移,这种效应称为引力红移。
youdao
应用推荐
模块上移
模块下移
不移动