the characteristic of milky way galaxy?
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The milky way galaxy is a barred spiral galaxy with an estimated visible diameter between 170,000 and 200,000 light years (ly). It is estimated to contain 100-400 billion stars and at least that number of planets. The dark matter halo around the milky way may span as much as 2 million light years.
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Explanation:The milky way is a barred spiral galaxy with an estimated visible diameter between 170000 and 200000 light-years.It is estimated to contain 100-400 billion stars and at least that number of planets.The dark matter halo around the Milky Way may span as much as 2 million light years.Its spiral pattern rotation period is 220-360 Myr.
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