Why do scientists observe blueshift in certain stars?(1 point)

Question

Responses

Light wave frequencies decrease as an object moves toward the observer.
Light wave frequencies decrease as an object moves toward the observer.

Light wave frequencies increase as an object moves toward the observer.
Light wave frequencies increase as an object moves toward the observer.

Stars with higher temperatures emit more light waves at the blue end of the spectrum.
Stars with higher temperatures emit more light waves at the blue end of the spectrum.

Stars with lower temperatures emit more light waves at the blue end of the spectrum.

Answer 1

Light wave frequencies increase as an object moves toward the observer.