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The history of the universe: Big Bang to now in 10 easy steps - Space.com
Chronology of the universe - Wikipedia
The scientific story behind the timeline of our Universe - Big Think
The Big Bang - NASA Science
Big-bang model | Definition, Evidence, Videos, & Facts | Britannica
11.8: Evolution of the Early Universe - Physics LibreTexts
Timeline of the early universe - Wikipedia
When Everything in the Universe Changed - JSTOR Daily
Formation and Evolution of the Universe | AMNH - American …
Big Bang - Science@NASA