Stefan Mileschin

Our Big Bang, for example, unleashed a universe’s worth of energy and matter in an instant, then flung it omnidirectionally away at the speed of light as temperatures throughout the growing cosmos exceeded 1,000 trillion degrees Celsius in the first few nanoseconds of time’s existence. The following couple hundred million years, during which time the universe cooled to the point that particles beyond quarks and photons could exist — when actual atoms like hydrogen and helium came into being — are known as the dark ages, on account of stars not yet existing to provide light.

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