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Homework #1
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•Question 5:  (1 point)
•     Which of the following sets of stars have ALL been the "north star" (or pretty nearly) at one time or another?
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•  1. Polaris, Vega, Rigel   
•*2. Polaris, Vega, Thuban   
•  3. Polaris, Rigel, Sirius   
•  4. Polaris, Vega, Alpheratz   
•  5. Polaris, Vega, Deneb   
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Fig. 2-7b