Using the following graph, how would you determine approximately how fast a galaxy would be moving and if it is moving towards us or away from us in km/s if it were 1,000 Mpc from the Milky Way?
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You'll be working with a real galaxy spectrum, which is plotted in the figure below. This is the ... Is the galaxy moving toward us or away from us? ... velocity (km/s) = H x distance .
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