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Big Bang Day: Five ParticlesEpisodes Available now
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The Next Particle
5/5A symmetric partner to all the known particles could provide the key to understanding them

The Neutrino
4/5The most common particle in the universe continuously passes through each of us.

The Antiparticle
3/5Every particle has an antiparticle. Should the two combine, the result is annihilation.

The Quark
2/5Quarks comprise virtually all visible material, but why do we know so little about them?

The Electron
1/5Simon Singh on the significance of five subatomic particles, starting with the electron.