1. At first, the entire universe was a hot ball tinier than an atom and much hotter than any start. This swelled much, much faster than the speed of light, growing to the size of a galaxy in just in a tiny fraction of a second.
2. As the universe expanded, it began to cool and tiny particles of energy and matter each of them much smaller than atoms-began to form a thick, soup-like material.
3. After about three minutes, gravity started to pull the particles together. Atoms joined together to make gases such as hydrogen and helium, and thick soup began to clear and thin out by the end of the third minute, the matter that surrounds us today had been created.
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