Initial masses - PowerPoint PPT Presentation

The Big Bang

The Big Bang. Event that occurred approximately 13.7 BILLION years ago All the mass and energy concentrated at a point The universe began expanding and continues to expand After 1 million years matter began to cool enough to form atoms- Hydrogen- the building block of stars. In the Beginning.

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The Evolution of the Universe

Nicola Loaring. The Evolution of the Universe. The Big Bang. According to scientists the Universe began ~15 billion years ago in a hot Big Bang. At creation the Universe was infinitely hot and infinitely small. Time started when the Universe began- there is no before the Big Bang!.

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779 views • 19 slides

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