It wasn't. The Big Bang was the beginning of the universe; the universe didn't exist before then.
the answer to your question is that it is formed naturally and is not made, unless your refering to the beginning of the universe.
Oxygen is a naturally occurring element. Made at the beginning of universe.
In the beginning, the universe was created. Life was very beautiful. Now we are faced with a universe so big and so old that it defies our imaginations to grasp it. It appears to have begun 15 billion years ago. Our galaxy, alone, has some 100 billion stars, and it is just one of perhaps a 100 billion galaxies, and this immense universe is expanding at an ever increasing rate. This is an awe-inspiring picture, but what does it say about the origin of the universe? Let's imagine that the scientific cosmologists have been creating an ever more detailed and vivid movie of the structure and movement of the universe, and this film, when it is played backwards, makes the universe appear as if it is coming together and beginning in an intensely hot and dense state. But the real question is whether this movie takes us back to the absolute beginning, or very origin of the universe. It doesn't appear to do so because the basic laws of nature, as described by Einstein's relativity, break down as we approach this beginning. It is as if the film runs out and just before we reach the beginning we are dazzled with a blinding white light. And we are faced with the very difficult question: can science find a way to talk about the very beginning of the universe, or is this simply outside its scope?
nonexistent
It had no beginning date and no ending date. It was there at the beginning of infinity and will be at the end of infinity
astronaut
Universe is meant to have no bigining or end..
-- a straight line -- a circle -- the universe
Neon occurs naturally. It was discovered (not made) by Sir William Ramsey and Morris W. Travers.
99.999% of the universe is made of plasma
When big bang happened as we all know it was believed that proton and neutron combined and form atom and that time energy was converted into the mass of the universe. And at beginning the universe was very hot then gradually it began to expand and temperature falls down very quickly.