Ep20. Why did the Big Bang happen?

Why did the Big Bang happen and was it really a giant explosion? In this mind-stretching episode, Lily and Max explore one of science’s biggest mysteries in a kid-friendly way. They discover how the universe began expanding, why scientists think space was once extremely hot and dense, what clues are left behind from the early universe, and why some questions are still being investigated today. It is a cosmic adventure full of galaxies, mystery boxes, star confetti, and very big “why?” questions.