When will a scientist observe redshift in the spectrum of a distant space object
when the object is moving away from the scientists
when the object is moving toward the scientist
when the object is in the same frame of reference ad the scientists
when the object is stationary
1 answer
A scientist will observe redshift in the spectrum of a distant space object when the object is moving away from the scientists. This is because redshift occurs when the wavelength of light is stretched, which happens when an object is moving away from the observer. When the object is moving toward the scientist, they would observe a blueshift instead, where the wavelength of light is compressed. When the object is in the same frame of reference as the scientists or stationary, there will be no redshift or blueshift observed.