The conversation between human and AI assistant.
Did matter exist before the big bang?
That's interesting. What about the origin of the universe? Do scientists have any new theories about it?
There are many theories about the origin of the universe, but one of the most popular is the inflationary theory. This theory proposes that the universe underwent a rapid period of expansion shortly after the big bang. This expansion was fueled by a type of energy known as the inflation field.