The closest star is 4 light years away.
1 Light Year= 10 trillion kilometers
The stellar disk of the Milky Way galaxy is approximately 100,000 light years in diameter, and is believed to be, on average, about 1,000 light years thick. It is estimated to contain at least 200 billion stars and possibly up to 400 billion stars.
posted by Meghan Moss Gallagher at 12:41 PM
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