EVERYDAY SCIENCE

Detailed explanation-1: -The big bang is how astronomers explain the way the universe began. It is the idea that the universe began as just a single point, then expanded and stretched to grow as large as it is right now-and it is still stretching!

Detailed explanation-2: -This breakthrough idea later became known as the Big Bang! 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.

Detailed explanation-3: -The Big Bang theory says that the universe came into being from a single, unimaginably hot and dense point (aka, a singularity) more than 13 billion years ago. It didn’t occur in an already existing space. Rather, it initiated the expansion-and cooling-of space itself.

Detailed explanation-4: -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-5: -And, 13.8 billion years later, the universe is still expanding, albeit at a much slower rate. The prevailing theory, known as the isotropy hypothesis, argues that the universe is not only expanding but doing so at the same rate in all directions.