The Big Bang Gets This Number Wrong (3×).
🌌 For the first few minutes after the Big Bang, physics works with extraordinary precision.
We can predict the exact amounts of hydrogen, helium, and deuterium in the universe — and observations confirm them almost perfectly.
But one number does not match.
According to our best cosmological models, the early universe should have produced three times more lithium than we can observe in the oldest stars. This is not experimental noise. It is a persistent, factor-of-three discrepancy inside one of the most successful theories ever built.
Known as the cosmological lithium problem, this anomaly has resisted explanations for decades — and every proposed fix risks breaking something else that works.
Is the problem hidden inside stars, or does it point to new physics in the first minutes of cosmic history?
This video explores why one small number may reveal a much deeper flaw in our understanding of the universe.
🔔 Subscribe for more real scientific mysteries — no hype, no fiction.
Credits:
ESO, CC BY 4.0 https://creativecommons.org/licenses/..., via Wikimedia Commons
Cmglee, CC BY-SA 3.0 https://creativecommons.org/licenses/..., via Wikimedia Commons
MyxococcusFruitingBody, CC BY 4.0 https://creativecommons.org/licenses/..., via Wikimedia Commons