Why is there matter

▸ The Big Bang made matter ≈ antimatter…

▸ They meet → annihilate into light (photons)

▸ A ~1 / 1 billion excess → our universe exists

▸ The 3 Sakharov conditions · CP violation (open question)…

▸ Online. ✅

Now showing

⚖️ Annihilation

Matter left—

Antimatter left—

Photons made—

Scenario—

⚠️ Frontier of knowledge

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Drag the excess: balanced → all annihilate (only light); a small excess → matter survives as our universe. ⚠️ Why there is an excess: unclear

Matter vs antimatter remainingmatteranti