1. Describe the kinds of observations you would make to study the galactic nucleus. 2. Why must… 1 answer below »

1. Describe the kinds of observations you would make to study the galactic nucleus. 2. Why must astronomers use infrared telescopes to observe the motions of stars around Sgr A*? 3. What evidence can you cite that the nucleus of the galaxy contains a supermassive black hole? 4. Why are metals less abundant in older stars than in younger stars?  

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