1. If a galaxy contains a supernova that at its brightest has an apparent magnitude of 17, how…

1. If a galaxy contains a supernova that at its brightest has an apparent magnitude of 17, how far away is the galaxy? Assume that the absolute magnitude of the supernova is 219. (Hint: See Reasoning with Numbers 13-2.) 2. If you find a galaxy that is the same size and mass as our Milky Way Galaxy, what orbital velocity would a small satellite galaxy have if it orbited 50 kpc from the center of the larger galaxy?  

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