Answers

2016-06-18T17:30:47+08:00
By the Nebular Theory and our universe as a whole was believed to be formed by Big Bang Theory.
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2016-06-18T19:57:07+08:00
1. A large cloud of interstellar gas and dust begins to contract due to gravity.
2.As the clouds contracts,it rotates faster
,flattens and heats up in the center.

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