Start of universe (Scientific side)

Scientists have many cosmic theories on how the universe began and the number one theory is the big bang theory. In the big bang theory, there was one instant moment that started the universe. In this theory there was a huge explosion that started bringing in all the pressure that set off the explosion into one single spot. After the explosion matter was created and started to expand outward which was the start of the universe. The explosion was so hot that all matter had to be spread out to start the cooling, during this time, celestial bodies were formed, like stars, planets, and asteroids. These bodies became groups called galaxies, or solar systems, where a star is in the center of a group planets and holds the most gravitational strength. Other things were created as well, such as black holes, which are infinitely strong holes of gravity that pull everything into it. Belts of asteroids formed which go around certain groups of planets like the one that is in the middle of our solar system.