When will a scientist observe redshift in the spectrum of a distant space object?(1 point)
Responses
when the object is in the same frame of reference as the scientist
when the object is moving toward the scientist
when the object is stationary
when the object is moving away from the scientist
A scientist will observe redshift in the spectrum of a distant space object when the object is moving away from the scientist.
A scientist will observe redshift in the spectrum of a distant space object when the object is moving away from the scientist.
When a scientist observes redshift in the spectrum of a distant space object, it means that the light waves emitted by the object are being stretched and shifted towards longer wavelengths. This phenomenon occurs due to the Doppler effect, which is a change in the frequency or wavelength of a wave as an observer moves relative to the source of the wave.
To observe redshift in the spectrum of a distant space object, the object needs to be moving away from the scientist. As the object moves away, the wavelengths of the light waves it emits get stretched, causing a shift towards the red end of the spectrum. This redshift can be detected by analyzing the spectrum of the object using a spectrograph or a similar device.
So, the correct response would be: when the object is moving away from the scientist.