Electroweak Era
In the first fraction of a second, the universe cooled enough for the electromagnetic and weak forces to split, setting the stage for stable particles.
Unified
Planck Era
The Plank Era occurred in the first part of the first millisecond after the singularity. Current estimated put it at up to 10−43 seconds after the Big Bang. The term “era” is used for this micro-duration as a sort of tip of the hat to Einstein’s Relativity. It reflects a conceptual approach to time that
Singularity
When we trace the universe backward, our equations point to an unimaginably hot, dense beginning — not a confirmed object, but the mysterious edge where current physics breaks down.