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AhaBulb: Stuff Everyone Should Know · ahabulb.com/astro-flat-rotation-curves

What do unexpectedly flat galaxy rotation curves imply?

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  1. Dark matter beyond visible stars
  2. No gravity outside the disk
  3. Every outer star has equal mass

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References

  1. The Mass of the Galaxy openstax.org/books/astronomy-2e/pages/25-3-the-mass-of-the-galaxy Checked 2026-10-10.

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