How did the big bang start expanding?

Answer 1

The Big Bang is a theory of what happened at the beginning of the universe. Astronomy and physics have shown that the universe did actually have a beginning, but we're not exactly sure of the origins of the Big Bang.

There is a fortune and a Nobel Prize waiting for the first person to answer this question to everyones satisfaction.

the-pokedex:well this came to me one day but it is correct that the sun was getting to much energy so it blow up then the paticals of water came to the lava making rock and then the little rocks came to the main rock or the biggest making planets PS i am only 9

Answer 2

The Big Bang theory suggests that the universe began as an infinitely hot and dense point, known as a singularity, which rapidly expanded in an event known as the Big Bang. The expansion is thought to have been triggered by a sudden release of energy, causing the universe to rapidly grow and cool as it continues to expand to this day.

Answer 3

The answer is simple: we're not sure. As Alan Guth stated so well: "The Big Bang theory says nothing about what banged, why it banged, or what happened before it banged."