Our home galaxy might be larger than we first assumed, astronomers have found. A new model of the Milky Way has revealed that our galaxy is wider than we thought, according to a new paper in the ...
Keeping in mind that one light year is equal to about 6 trillion miles, the spiral disk of stars that is our Milky Way Galaxy spans 100,000 light years in diameter. The thickness of that disk, though, ...
A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American Astronomical Society in January 1925, a paper read by one of his ...
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How Large is the Milky Way?

Space to Scale: The Milky Way. How big do you think the Milky Way galaxy would be if the Sun was 0.0015mm in diameter? Guess by posting in the comments before you see the answer! GOP‑appointed judge ...
At approximately 100,000 light years in diameter, the Milky Way’s vastness and the broader, ever-changing dynamics of the cosmos defy any attempt to fully understand our home galaxy and its history.