Question

Consider three widely separated galaxies in an expanding universe imagine that you are located in galaxy and observe that both galaxies 2 and 3 are moving away from you. If you asked an observer in galaxy 3 to describe how galaxy 2 appears to move, what would he or she say)

Answer 1

Answer:

expanding universe imagine that you are located in galaxy and observe that both galaxies 2 and 3 are moving away from you. If you asked an observer in galaxy 3 to describe how galaxy 2 appears to move, what would he or she say)