You are observing a the spectrum of two astronomical objects, A and B. You notice that all of the lines in the spectrum of object A are 10.5 nm longer than you expected. You also notice that all of the lines in the spectrum of object B are 2.1 nm shorter than you expected. Using your knowledge of the Doppler Effect determine the following: a) in which direction is each object moving? b) which object is moving the fastest?

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