When a star is approaching and it's coming our way
Its spectrum seems bluer, won't you hear what I say
And when a star's retreating way out of range
And the scientist measures its frequency change
Well that's a redshift, redshift
If the star is moving away

By reading Doppler Shifts of all we see in the skies
        (clusters of galaxies, near and far)
We get the big picture and a big surprise
        (redshifts going, redshifts going)
The Universe is growing and expanding away
        (galaxies are speeding, speeding away)
But maybe gravity will shrink it back some day
                        
Owwwwwwwwwwwww-eeeeeeeeeee
                          
Doppler Shift - to the red or the blue
Doppler Shift - and our shift's overdue