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Question
Find the approximate mass of the dark and luminous matter in the Milky Way galaxy. Assume the luminous matter is due to approximately $10^{11}$ stars of average mass 1.5 times that of our Sun, and take the dark matter to be 10 times as massive as the luminous matter.
$m_l = 3.0\times 10^{41}\textrm{ kg}$
$m_d = 3.0\times 10^{42}\textrm{ kg}$
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