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ACTIVITY: Infographic — Chemical Abundances: The Universe

Hydrogen is the most abundant element in the Universe and helium is second. Together they make up roughly 74% and 24% of all matter in the universe respectively. Download a PDF of Chemical Abundances: The Universe infographic.

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    how do they know the chemical abundance of the universe? Is there a way to measure it? I am confused on how they measure/know the chemical abundance of the universe.
    (1 vote)
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