How many stars would there be in our galaxy

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Reference no: EM13244421

The Sun revolves around the center of the Milky Way Galaxy at a distance of about 30,000 light-years from the center (1ly = 9.5*10^15m). If it takes about 200milion years to make one revolution, estimate the mass of our Galaxy. Assume that the mass distibutino of our Galaxy is concentrated mostly in a central uniform sphere. If all the stars had about the mass of our Sun (2 * 10^30 kg), how many stars would there be in our Galaxy?

Reference no: EM13244421

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