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Homework Help: Find the mass of the our galaxy

  1. Dec 10, 2007 #1
    im doing a problem were i find the mass of the our galaxy and i found the mass. What the problem is saying is to use the mass found to estimate how many stars are in our galaxy?
  2. jcsd
  3. Dec 10, 2007 #2
    Maybe you should look up the average mass of a star? I'm assuming the mass of the associated planets is nearly negligible in comparison.
  4. Dec 10, 2007 #3
    Or you could look up relative proportions of star sizes in our galaxy and do a weighted average.

    Or the simple way would be to just use the mass of the sun: you would have to justify this though.
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