The universe as it appears today is redshift 0 .

现在的宇宙红移值为0。

Galaxy redshift from the ca ii k line .

从钙二及钾谱线得出星系红移。

The object 's apparent brightness yields the distance ; its redshift yields the velocity .

这些天体的视亮度可以得到距离，它们的红移可以得出速度。

Identifying the lines and determining the redshift of a quasar .

确认类星体的光谱线及决定它的红移。

The periodicity in redshift distribution of qsos .

类星体红移分布的周期性。