The Big Bang Theory
The Big Bang Theory is currently the most widely accepted theory that pertains to the origin of the universe. The theory speculates that ten to twenty billion years ago, the universe consisted of a compact ball of hydrogen, protons, neutrons, electrons, and their anti-particles in addition to radiation. There was no distinction among planets, stars, suns, or galaxies. Five billion years ago, the compact hydrogen "soup" blasted apart with huge force, matter was hurled in all directions, and the universe doubled in size. This expansion of the universe is believed to be still occurring.
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