Redshift is observed when:(1 point)

Question

Responses

a distant luminous object travels rapidly towards an observer.
a distant luminous object travels rapidly towards an observer.

a luminous object is traveling alongside an observer.
a luminous object is traveling alongside an observer.

a luminous object is stationary relative to an observer.
a luminous object is stationary relative to an observer.

a distant luminous object travels rapidly away from an observer.

Answer 1

Redshift is observed when:

a distant luminous object travels rapidly away from an observer.

This phenomenon occurs due to the Doppler effect, where the wavelength of light is stretched, resulting in a shift towards the red end of the spectrum.