What is the approximate diameter of the Milky Way galaxy structure?
Answer
100,000 light-years
The Milky Way galaxy spans an impressive distance, quantified in the text as 100,000 light-years in diameter. This immense scale characterizes the overall extent of the system which is composed of stars, gas, dust, stellar remnants, and dark matter bound by gravity. This measurement defines the boundaries of the massive structure that includes the central bulge, the spiral arms comprising the disk, and the extensive surrounding halo.
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