'This color "shift", a change observed in spectral lines, gives astronomers like Ted a good idea of galactic motion'
red
TED'S HUES: This color shift, a change observed in spectral lines, gives astronomers like Ted a good idea of galactic motion
This color "shift", a change observed in spectral lines, gives astronomers like Ted a good idea of galactic motion
This color "shift", a change observed in spectral lines, gives astronomers like Ted a good idea of galactic motion
TED'S HUES
red
TED'S HUES