Once something existed, it evolved

The Universe could have remained a homogeneous plasma soup, an unending field of energy, or any number of unchanging, uniform, symmetrical states.

However, it raged with change. Things clumped, things combined and created new things, in just moments becoming ever more mindbogglingly complex, rambunctious, mysterious, and beautiful. And changes continued for millions and billions of years, and still there's evolution.

MORE INFO:

• Wikipedia's Chronology of the Universe page.
• The UK's Planck Mission provides an Inflation page describing changes in the Universe during its first 0.00000000000000000000000000000000001 second of existence.
• NASA provides a page called "What is the Inflation Theory," offering pros and cons.