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Milky Way Galaxy

How big is a galaxy?


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Answered 2014-01-22 15:29:28

Our Milky Way has a diameter of 100,000 light-years, and contains somewhere between 200-400 billion stars. Other galaxies can have anywhere from about 10 million stars to about 100 trillion stars; a dwarf galaxy is much smaller than the Milky Way, while the largest galaxies can have a diameter of several hundred thousand light-years.

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