Understanding about the universe

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Understanding about the universe
Big Bang is the beginning of the universe. Universe has made a huge progress in the last decade and the understanding we had until now is totally wrong and outdated.

When we watch up sky in the evenings we feel that the universe and stars are so beautiful, and we’d like to understand what's going on and get into philosophical thoughts. This kind of question we might have asked: How did the universe begin?

To understand how the universe works we need to know (1) entire universe was made of kind of atoms; as well as we are made of ;(2) law of physics that tell us how things fall and move ; and (3) chemical elements out there without which we couldn't have possibly born.

So, where do they come from? This actually turns out as a real scientific question we can ask today. Our recent understanding about it can be formulated with newly discovered Higgs boson without which we could not exist. Existence of the Higgs boson was discovered in July fourth 2012 and the physicists who theorized it were awarded Nobel Prize in 2013.

The mysterious sides of the Universe are dark matter and antimatter. Dark matter is a bulk of matter in a Universe; still we don't know what it is and without it we could not have existed in universe. Antimatter may sound like something shown up in science fiction movies; they do exist, we can even make them & born at the very beginning of the universe in the Big Bang. But fortunately antimatter doesn't seem to exist today.

A tremendous expansion of the universe idea was born out with the latest data and based on the nature of dark energy it may have an end or may continue expanding forever. We don't know which one is the right future yet.


Reference:
Course from the Big Bang to Dark Energy by Hitoshi Murayama on (Coursera)

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