The first 10-⁴³ s of the age of the universe,during which all four fundamental forces were united,is called the:

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Quizplus · Accepted Answer

The Planck era is the first 10-⁴³ seconds after the Big Bang, during which all four fundamental forces (gravity, electromagnetism, weak nuclear force, and strong nuclear force) were unified in a single force. During this era, the universe was incredibly hot and dense, with temperatures and energies that are difficult for us to even imagine. The other options (B) inflationary era, (C) event horizon, and (D) Hubble time are not accurate descriptions of this early period in the history of the universe.

The First 10-⁴³ S of the Age of the Universe,during