History of Oceania

How the world came to be?

The prevailing scientific theory about how the world came to be is known as the Big Bang Theory. According to this theory, the universe began about 13.8 billion years ago with a very hot, dense state. This state was followed by a period of rapid expansion, during which the universe cooled and matter began to form. The universe continued to expand and cool, eventually forming stars, galaxies, and other structures.

One of the key pieces of evidence supporting the Big Bang Theory is the cosmic microwave background (CMB). The CMB is a faint radiation that fills the universe and is thought to be the leftover radiation from the Big Bang.

Another piece of evidence supporting the Big Bang Theory is the abundance of light elements in the universe. The Big Bang Theory predicts that the universe should be made up of about 75% hydrogen and 25% helium, and this is what is observed.

The Big Bang Theory is widely accepted by scientists as the best explanation for how the world came to be. However, there are some aspects of the theory that are still not fully understood, such as what caused the Big Bang and what happened before it.