Question

question 13 of 29 > suppose an astronomer observes a star - system oriented towards her as shown in the animation. the system itself has no motion along the line of sight from earth. the light of the inner star as it orbits the center of mass does not change. is redshifted. is blueshifted.

Explanation:

When an object moves towards an observer, its light is blueshifted; when it moves away, it is redshifted. Since the star system has no motion along the line - of - sight from Earth and the inner star's motion relative to Earth doesn't change its distance from Earth in this case, there is no Doppler shift in its light.

Answer:

does not change