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2 BCE
Big Bang
The Big Bang was a massive explosion that helped the beginning of our universe and occured 13.7 billion years ago -
Period: 2 BCE to 1500
Large scale
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1 BCE
Stars
Stars began to form when our universe was about 200 million years old and now light up the night sky. They gave us the elements that we have and use today. -
4
Solar system
Our solar system formed about 4.8 billion years ago.
