![]() When cosmic inflation came to a sudden and still-mysterious end, the more classic descriptions of the Big Bang took hold. This was a period of cosmic inflation that lasted mere fractions of a second - about 10^-32 of a second, according to physicist Alan Guth’s 1980 theory that changed the way we think about the Big Bang forever. Suddenly, an explosive expansion began, ballooning our universe outwards faster than the speed of light. ![]() Around 13.7 billion years ago, everything in the entire universe was condensed in an infinitesimally small singularity, a point of infinite denseness and heat.
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