The effect is tiny but crucial, they added – and was predicted almost 100 years ago by Albert Einstein in his great theory of gravity, general relativity.
这影响虽然细微但非常关键，他们补充道 - 100年前，爱因斯坦在他伟大的重力理论-广义相对论中已经有了这样的预测。
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。
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。
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