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Top 5 most abundant elements in the observable universe (by mass)

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Mass fraction of the universe — Materials & element properties

Snapshot · 2026-05-31

  1. 1

    Hydrogen

    ~73.97%

  2. 2

    Helium

    ~24.02%

  3. 3

    Oxygen

    ~1.04%

  4. 4

    Carbon

    ~0.46%

  5. 5

    Neon

    ~0.134%