Why do scientists observe blueshift in certain stars?(1 point) 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 increase as an object moves toward the observer. Light wave frequencies increase as an object moves toward the observer. 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.
The correct response is: Light wave frequencies increase as an object moves toward the observer.
Scientists observe blueshift in certain stars because light wave frequencies increase as an object moves toward the observer. This phenomenon is known as the Doppler effect. When a star is moving closer to us, the wavelengths of the light it emits appear to be compressed, causing a shift towards the higher frequency end of the spectrum, which is the blue end. This is why it is called blueshift. By measuring the blue or redshift of the light from a star, scientists can determine its motion relative to us and gather information about its speed and direction of movement.
