Brian Cox - What's The Biggest Mystery in The Universe?
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English physicist and professor of particle physics Brian Cox explains some of the biggest mysteries in the universe.

Modern physics has given us a glimpse of what the true nature of the universe is. But there is still so much more to explore. One big mystery in science today is the The matter-antimatter asymmetry problem. But to better understand this complex issue we have grasp the nature of antimatter.

Brian Cox explains what antimatter is and how it's made at the LHC.

The Big Bang should have created equal amounts of matter and antimatter in the early universe. But today, everything we see from the smallest life forms on Earth to the largest stellar objects, is made almost entirely of matter. Comparatively, there is not much antimatter to be found. Something must have happened to tip the balance. One of the greatest challenges in physics is to figure out what happened to the antimatter, or why we see an asymmetry between matter and antimatter.

Our universe is a beautiful, elegant and strange, mysterious place at the same time. It has baffled curious minds since the very first humans gazed into the night sky and wondered what's out there.

While physicists can confidently say what happened a billionth of a second after the big bang, the vast majority of the universe remains unknown. In fact, we only understand about 5% of the total composition of the universe, which is ordinary matter. The other 95% which consists of dark matter and dark energy, remains in the realm of unexplained cosmic phenomenon.

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