الصفحة الرئيسية How long is Milky Way? byR.K.Williams —مايو 07, 2021 0 The disk of the Milky Way galaxy is about 100,000 light years in diameter (one light year is about 9.5 x 1015 meters), but only about 1000 light years thick. Our Galaxy contains about 200 billion stars.
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