GENERAL KNOWLEDGE

Detailed explanation-1: -"The Big Bang was 13.8 billion years ago. “We get that number by the fact that the universe is expanding so when we look at galaxies, they’re all moving away from us and that’s true of every point in the universe.

Detailed explanation-2: -The Big Bang was the moment 13.8 billion years ago when the universe began as a tiny, dense, fireball that exploded. Most astronomers use the Big Bang theory to explain how the universe began. But what caused this explosion in the first place is still a mystery.

Detailed explanation-3: -The Big Bang: the birth of the universe Around 13.7 billion years ago, everything in the entire universe was condensed in an infinitesimally small singularity, a point of infinite denseness and heat. Suddenly, an explosive expansion began, ballooning our universe outwards faster than the speed of light.

Detailed explanation-4: -About 13.8 billion years ago, the Big Bang gave rise to everything, everywhere, and everywhen-the entire known Universe.