R1E1D2S1H4I1F4T1
15 points
REDSHIFT is validvalid
a displacement of the spectrum of a celestial body toward the longer wavelengths [n REDSHIFTS]
the displacement of the light a receding object emits toward the red end of the spectrum [n -S]
a displacement of the spectrum of a celestial body toward the longer wavelengths [n REDSHIFTS]
the displacement of the light a receding object emits toward the red end of the spectrum [n -S]