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

Question

Responses

Stars with lower 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.

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

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

Answer 1

The correct response is:

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

Blueshift occurs when a star or other celestial object is moving towards an observer, causing the wavelengths of light to compress and shift towards the blue end of the spectrum. This indicates that the object is approaching the observer.