Learn about the Big Bang Theory in simple terms to understand how the universe began and evolved over time.
The Big Bang Theory is a scientific explanation of how the universe began. Imagine the universe as a giant balloon that started very small and expanded to its current size. About 13.8 billion years ago, all the matter and energy in the universe were packed into a tiny, hot, and dense point known as a singularity. Then, suddenly, this singularity exploded and started expanding. This explosion is what we call the Big Bang. As the universe expanded, it cooled down and allowed particles to form atoms, which eventually led to the creation of stars, galaxies, and planets. The Big Bang Theory helps scientists understand the origin and evolution of the universe.