Redshift is observed when:(1 point) Responses a luminous object is traveling alongside an observer. a luminous object is traveling alongside an observer. - no response given a distant luminous object travels rapidly towards an observer. a distant luminous object travels rapidly towards an observer. - incorrect a luminous object is stationary relative to an observer. a luminous object is stationary relative to an observer. - no response given a distant luminous object travels rapidly away from an observer
a distant luminous object travels rapidly away from an observer.
Redshift is observed when a distant luminous object travels rapidly away from an observer. This phenomenon is known as the Doppler effect, where the light waves get stretched or "redshifted" as the object moves away, causing a shift towards longer wavelengths.
Redshift is observed when a distant luminous object travels rapidly away from an observer. To understand this concept, we need to look at the phenomenon called the Doppler effect.
The Doppler effect is the change in frequency or wavelength of a wave as an observer moves relative to the source of the wave. When an object emitting light moves away from an observer, the wavelengths of the light waves it emits appear stretched, resulting in the observed light being shifted to longer wavelengths, which we perceive as a shift towards the red end of the spectrum. This is known as redshift.
To determine if redshift is observed, you need to consider the motion of the light source relative to the observer. If a distant luminous object is traveling rapidly away from an observer, the light waves it emits will be stretched due to the Doppler effect, resulting in an observed redshift.
Therefore, the correct statement is: a distant luminous object travels rapidly away from an observer.