How big is the Milky Way?

  • Milky Way
  • Size
  • Local Group

The Milky Way is estimated to be about 100,000 light-years in diameter. It contains billions of stars, including our Sun, and is part of a larger structure called the Local Group.

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Christina
Editorially reviewed Christina (July 24, 2023)
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Answered Jimmy (July 24, 2023)

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How big is the Milky Way?

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