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AhaBulb: Stuff Everyone Should Know · ahabulb.com/astro-dark-matter-cosmic-share

About what fraction of cosmic critical density is dark matter?

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  1. About 5 percent
  2. About 68 percent
  3. About 27 percent

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References

  1. What Is the Universe Really Made Of? openstax.org/books/astronomy-2e/pages/29-5-what-is-the-universe-really-made-of Checked 2026-10-10.

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