Big bang definition any sudden forceful beginning or radical change Meaning, pronunciation, translations and examplesThe Big Bang is a scientific theory about how the universe started, and then made the stars and galaxies we see today The Big Bang is the name that scientists use for the most common theory of the universe, from the very early stages to the present day The universe began as a very hot, small, and dense superforce (the mix of the four fundamental forces), with no stars, atoms, form,The Big Bang theory is the prevailing cosmological model explaining the existence of the observable universe from the earliest known periods through its subsequent largescale evolution The model describes how the universe expanded from an initial state of high density and temperature, and offers a comprehensive explanation for a broad range of observed phenomena, Bigbang ジヨン 12年度ヘアスタイル まとめ Bigbang Together Forever Big bang 髪型