Redshift is observed when:(1 point)

Question

Responses

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

a luminous object is traveling alongside an observer.

Answer 1

Redshift is observed when a distant luminous object travels rapidly away from an observer. Therefore, the correct response is:

a distant luminous object travels rapidly away from an observer.