How the universe came to be?

Answer 1

Although much of it is still unknown, the most important theory describing the laws of nature most accurately at the very beginning is the "Big Bang theory". The universe we know existed in an extremely dense and energetic point (where known physical laws break down)- inflated - the volume of space rapidly expanded perhaps because of gravity acting the opposing way(creating a push instead of a pull).

Answer 2

The prevailing scientific theory is that the universe began with the Big Bang, a rapid expansion of matter and energy from a singularity. This event occurred approximately 13.8 billion years ago and led to the formation of galaxies, stars, and ultimately the vast cosmos we observe today.