The Big Bang Theory

Animation Video

Introduction

The Big Bang Theory is the prevailing cosmological model that explains the origin of the universe. It posits that the universe began as an extremely hot and dense singularity approximately 13.8 billion years ago.

Cosmic Microwave Background (CMB) radiation, a remnant from the early universe.

The Big Bang

The term "Big Bang" refers to the moment when the universe began expanding rapidly from an incredibly compact state. This expansion marked the beginning of space and time as we know it.

Scientists believe that the universe's expansion was triggered by a singularity, an infinitesimally small, hot, and dense point.

Early Universe

During the initial moments after the Big Bang, the universe was too hot for the formation of atoms. Instead, it was composed of fundamental particles like quarks and leptons.

Cosmic Expansion

The universe has been expanding ever since the Big Bang. This expansion is evident in the redshift of light from distant galaxies, indicating that they are moving away from us.

Dark matter and dark energy play crucial roles in the ongoing cosmic expansion.

Formation of Elements

As the universe cooled, protons and neutrons combined to form the first atomic nuclei. The abundance of elements in the universe, from hydrogen to heavier elements, resulted from processes in stars and supernovae.

Cosmic Timeline

The timeline since the Big Bang includes the formation of galaxies, stars, and planetary systems. Earth itself formed about 4.5 billion years ago, leading to the emergence of life.