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 in the same frame of reference as the scientist when the object is stationary when the object is stationary when the object is moving away from the scientist when the object is moving away from the scientist when the object is moving toward 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.
A scientist will observe redshift in the spectrum of a distant space object when the object is moving away from the scientist. Redshift is a phenomenon in which the wavelengths of light from a distant object appear stretched out and shifted towards the red end of the spectrum. This occurs when the object is moving away from the observer. The greater the speed of the object's recession, the greater the observed redshift.
To understand why redshift occurs, we can look at the concept of the Doppler effect. The basic idea is that when an object emitting waves of any kind, such as light or sound, moves towards an observer, the waves are compressed and the perceived frequency increases, resulting in a blueshift. Conversely, when the object moves away, the waves are stretched out and the perceived frequency decreases, resulting in a redshift.
In the context of light from distant space objects, the Universe is expanding, and galaxies and other objects are moving away from each other. As a result, the light emitted by these objects is subject to a cosmological redshift, causing the observed wavelengths to shift towards the red end of the spectrum.
Therefore, when a space object is moving away from the scientist, the scientist will observe redshift in the spectrum of that object.