How did the world come about in brief?

The world, as understood through scientific theories, formed about 4.5 billion years ago from the solar nebula, a cloud of gas and dust. Gradually, particles coalesced under gravity to form the Earth and other celestial bodies. Over millions of years, the planet cooled, allowing for the formation of a solid crust, oceans, and eventually an atmosphere conducive to life. The emergence of life began with simple organisms, evolving over time into the diverse ecosystems we see today.