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Outline: Evolution Of The Big Bang

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Big Bang Report

Overview of the Big Bang
We don’t know what happened at or before the start of the universe because we don’t have the equipment to look back into space that far but scientists have an idea of what happened at around 10-43 seconds after the start of time. As the poster above shows, the big bang theory is the leading theory on how the universe began from an infinitely hot single point in space and then rapidly expanded, cooling and developing into the universe we know today, which is still evolving. At 10-35 seconds, the universe expanded faster than the speed of light; it was so hot and pressurised that all the basic forces were unified into one. There was more matter than antimatter in the big bang, which resulted in As it …show more content…

Inflation happened 10-35 seconds after the beginning of time. This is when there was very fast expansion of space, which is only stopped when the energy was converted into matter and energy like there is today.

The universe takes shape after 10-6 seconds from the beginning of time, when

Formation of basic elements at 3 seconds

The radiation era at 10,000 years

Beginning the era of matter domination at 300,000 …show more content…

Cosmic microwave background is the oldest light in the universe and with a sensitive radio telescope you can see a uniform weak light from everywhere in the universe. CMB is the strongest electromagnetic radiation in the microwave region of the radio spectrum that isn’t related to any star or galaxy. This was formed when the universe was much younger at around 380,000 years after the big bang; it was filled with very dense hot hazy hydrogen plasma like explained above. The big bang means that everything would have started at one small point hence the plasma, but this would be hard to believe without the CMB for evidence. It’s uniform from every direction we look at it in space; this is because we are essentially looking back in time to when the universe was developing. This means that all of the thermal radiation is at the same stage in the universe and therefore the photons emitted are uniform because they haven’t developed into matter

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