Metal-poor nebulae provide the most precise estimate of primordial helium
Measurements of helium and hydrogen emission lines reduced uncertainty to 0.5%, strengthening tests of Big Bang nucleosynthesis and particle physics.
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Measurements of helium and hydrogen emission lines reduced uncertainty to 0.5%, strengthening tests of Big Bang nucleosynthesis and particle physics.
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Measurements of helium and hydrogen emission lines reduced uncertainty to 0.5%, strengthening tests of Big Bang nucleosynthesis and particle physics.
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