Timeline of the Universe · event

The Dark Ages

380,000 years – 150 million years · Dark Ages

Temperature (K)
60
When
380,000 years – 150 million years
Redshift
z ≈ 1100 – 20
Era
Dark Ages
Seconds After Big Bang
31556930000000

What Happened

No stars, and nothing to see but the fading afterglow. Neutral hydrogen fills space while gravity quietly assembles the dark matter halos everything else will later fall into.

Researchers

Equations

Theories

Referenced by

equation
researcher
theory

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From the Cosmic Timeline database in Notion, last edited 2026-08-16. This page is the row, rendered by the build; nothing on it is written by hand.