1. All of the nearby stars were observed to have redshifted spectra. What conclusions could we draw? What other measurement would be useful to have for each star, and why? 2. No stars had any Doppler...

1. All of the nearby stars were observed to have redshifted spectra. What conclusions could we draw? What other measurement would be useful to have for each star, and why?

2. No stars had any Doppler shift. What would that say about stellar motions relative to the solar system? Is that possible? Hint: Consider Newton’s law of gravitation from Chapter 3.