TED-Ed

View full lesson: https://ed.ted.com/lessons/the-beginning-of-the-universe-for-beginners-tom-whyntie How did the universe begin -- and how is it expanding? CERN physicist Tom Whyntie shows how cosmologists and particle physicists explore these questions by replicating the heat, energy, and activity of the first few seconds of our universe, from right after the Big Bang. Lesson by Tom Whyntie, animation by Hornet Inc.