Big Bang Theory

Discover one theory about a single event over 13.8 billion years ago, that might have created our Universe. Physics - Universe - Learning Points. The Big Bang took place over 13.8 billion years ago. The Big Bang caused our Universe to expand suddenly, bringing time and space into existence. Following the Big Bang, temperatures cooled and tiny particles of matter began to form. The first atoms to form were hydrogen and helium. A Twig Curriculum Film. Delivering key learning points. Get straight to the facts in just three minutes – directly linked to core learning, Twig's curriculum films will fit neatly into your lesson plans.